Unit 4 · Workbook

4B. Saving the wild — Workbook

Extra practice for home study · with answer keys

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Workbook illustration

How to use this workbook

  • Try each exercise on paper first — don't peek!
  • Tap Show answer on a single item, or use the big button above to reveal everything.
  • Re-do anything you got wrong the next day.

1. Vocabulary — expressions with TAKE

Choose the option that best completes each sentence.

  1. We have to ___ now — the situation is getting worse.

  2. Please ___ ___ my plants while I'm away.

  3. The conference will ___ ___ in Berlin next October.

  4. You shouldn't ___ your health ___ ___ .

  5. The children have to ___ ___ using the computer.

2. Vocabulary — take + preposition

Complete each sentence with ONE preposition from the box.

Word bank — drag or tap, then tap a gap
  1. She's decided to take  drop  yoga next month.
  2. My daughter really takes  drop  her grandmother — same laugh.
  3. Please take your shoes  drop  before you come in.
  4. I'll take  drop  the presentation if you're too tired.
  5. Are you going to take part  drop  the marathon this year?
  6. Don't take  drop  too many projects at once.

3. Grammar — zero or first conditional?

Choose the correct form.

  1. If it ___ tomorrow, we'll cancel the trip.

  2. Water ___ if you heat it to 100 °C.

  3. If we don't protect them, tigers ___ within decades.

  4. Plants ___ if you don't water them.

  5. I'll call you as soon as I ___ home.

  6. Unless the government ___ , the reef will disappear.

4. Grammar — put the verb in the correct form

Put the verbs in brackets in the correct form (present OR will + infinitive).

  1. If it (rain) ___ tomorrow, we (stay) ___ home.

  2. As soon as the film (finish) ___ , I (call) ___ you.

  3. Ice (melt) ___ if you (leave) ___ it in the sun.

  4. We (not leave) ___ until the storm (pass) ___ .

  5. If you (heat) ___ metal, it (expand) ___ .

  6. Once the results (be) ___ out, they (send) ___ an email.

5. Grammar — put the sentence in order

Put the words in the correct order.

  1. we / will / if / act / save / now / them / we

  2. call / arrive / when / I / I'll / you

  3. the reef / disappear / unless / act / will / we

  4. boils / if / it / heat / water / you / to 100 °C

  5. the storm / until / we / leave / stops / won't

6. Grammar — find and fix the mistake

Each sentence has ONE mistake. Rewrite it correctly.

  1. If it will rain tomorrow, we'll stay home.

  2. I'll text you as soon as I will arrive.

  3. Unless we don't act, the tigers will disappear.

  4. If you heat water, it will boil.

  5. We won't leave until the rain will stop.

  6. When I will get home, I'll cook dinner.

7. Reading — true / false / not given

Read the short article and mark each statement T, F or NG.

In the small mountain kingdom of Bhutan, the constitution requires that at least sixty per cent of the country remains covered by forest — forever. Today, the figure is actually above seventy per cent, and rangers patrol these forests to protect one of the healthiest tiger populations on Earth. If a tiger attacks livestock, farmers are compensated by the government within days, and if a village reports a poacher, they receive a share of any fine. As soon as young Bhutanese finish school, many take part in national tree-planting days, sometimes planting more than a hundred thousand trees in a single hour. Tourism is strictly limited, and every visitor must pay a daily fee that funds education and healthcare across the country.

  1. Bhutan's constitution requires at least 60% forest cover.T  /  F  /  NG
  2. Bhutan's current forest cover is below 60%.T  /  F  /  NG
  3. Farmers wait months to be compensated for lost livestock.T  /  F  /  NG
  4. Villages that report poachers receive a share of any fine.T  /  F  /  NG
  5. Young Bhutanese sometimes plant over 100,000 trees in an hour.T  /  F  /  NG
  6. The daily tourist fee is the highest in Asia.T  /  F  /  NG

8. Writing — guided task

Write 80–100 words: 'If I ran a nature reserve for one day, I would…'. Include at least: 3 first conditionals, 1 future time clause, and 2 expressions with TAKE.

Check your writing

  • 80–100 words
  • 3 first conditionals
  • 1 future time clause (when / as soon as / until / before…)
  • 2 expressions with TAKE

9. Listening — marine biologist interview

Listen to the short interview. Two voices — a reporter and a marine biologist. Answer the questions. Play it twice if you need to.

🎧 Interview · marine biologist on coral reefs · ~1 min
  1. What is the single biggest change the biologist has seen in coral reefs?
  2. According to the biologist, is there any hope?
  3. What happens when fishermen become part of the protection team?
  4. What three simple things does the biologist recommend?
  5. What is her prediction for the oceans in 2050 if we act now?
  6. And if we don't act?

10. Dictation — key conditional / time-clause forms

Listen again to the biologist and complete each line with the missing verbs.

🎧 Marine biologist — key structures
  1. If we global warming below 1.8 degrees, most reefs will survive.
  2. As soon as fishermen become part of the protection team, everything .
  3. When they the reef themselves, illegal fishing drops immediately.
  4. Once policy conservation seriously, everything else gets easier.
  5. If we act now, the oceans alive.
  6. If we don't, the oceans quieter, emptier and grey.

11. 🔥 Challenge — sentence transformation

Rewrite the second sentence to mean the same, using 2–5 words including the KEYWORD.

  1. 1. If we don't hurry, we'll miss the flight. → We'll miss the flight ___ hurry. (KEYWORD: UNLESS)

  2. 2. I'll finish and then I'll call you. → I'll call you ___ I ___ . (KEYWORDS: SOON / FINISH)

  3. 3. Water boils at 100 °C. → If you ___ water to 100 °C, it ___ . (KEYWORDS: HEAT / BOILS)

  4. 4. We must protect them or they'll disappear. → If we ___ them, they ___ . (KEYWORDS: PROTECT / WON'T DISAPPEAR)

  5. 5. Please don't leave before you finish. → Please ___ leave ___ you ___ . (KEYWORDS: DON'T / UNTIL / FINISH)

12. 🔥 Challenge — linking phrases

Mark the linking (consonant→vowel, /r/, /w/, /j/) between the underlined words. Then write which type it is: C-V, R, W, or J.

  1. 1. take_action

  2. 2. far_away

  3. 3. go_out

  4. 4. the_end

  5. 5. an_elephant

  6. 6. do_it

  7. 7. never_again

  8. 8. my_own

13. 🔥 Challenge — odd one out

Three share a category. Pick the ODD ONE OUT.

  1. 1. Wildlife nouns:

  2. 2. Take expressions (accepting duty):

  3. 3. Take expressions (relaxing):

  4. 4. Time-clause words (use present tense):

14. 🔥 Challenge — extended writing

Write a 130–160 word open letter to your city's mayor asking for the protection of ONE local place (a park, a river, a beach, a forest). Use AT LEAST 4 first conditionals, 2 future time clauses, and 3 expressions with TAKE.

Check your writing

  • 130–160 words
  • 4+ first conditionals
  • 2+ future time clauses
  • 3+ expressions with TAKE

15. Self-check

Tick what you can now do confidently.

  • I can use the zero conditional for general truths (if + present, present).
  • I can use the first conditional for real future possibilities (if + present, will…).
  • I use the present tense — not 'will' — after when, as soon as, until, before, after, once.
  • I use 'unless' correctly (= 'if…not').
  • I can use 8+ expressions with TAKE naturally.
  • I can link words smoothly in connected speech (C-V, /r/, /w/, /j/).
  • I can defend one species I would save and one local place I would protect.