1. What does the word pesticides in paragraph 2 refer to?
   Answer: B chemical substances

2. What does the word it in paragraph 3 refer to?
   Answer: C The pollution

3. Which word has the closest meaning to the word isolated?
   Answer: A remote

4. Which is NOT TRUE according to the text?
   Answer: A Only gases from vehicles cause pollution.

Rearrange the given words to make complete sentences.

1. Zookeepers must be caring because they look after animals.
   Answer: Zookeepers must be caring because they look after animals.

2. We should turn off the lights when we don’t use them.
   Answer: We should turn off the lights when we don’t use them.

3. We are going to take care of kangaroos this summer.
   Answer: We are going to take care of kangaroos this summer.

Make questions for the underlined words.

1. What do Dolphin Plus experts carry out at the centre?
   Answer: What do Dolphin Plus experts carry out at the centre?

2. Why is the Earth getting warmer?
   Answer: Why is the Earth getting warmer?

3. How long are the volunteers going to stay in the forest?
   Answer: How long are the volunteers going to stay in the forest?

Combine the sentences using the words in brackets. Add a comma where necessary.

1. If you don’t join this trip, you will not have the chance to see the sharks.
   Answer: If you don’t join this trip, you will not have the chance to see the sharks.

2. As soon as we arrive at the beach, we will collect the rubbish.
   Answer: As soon as we arrive at the beach, we will collect the rubbish.

3. Unless we save the rainforests, gorillas will have no place to live.
   Answer: Unless we save the rainforests, gorillas will have no place to live.

4. After the elephant recovers from the illness, people will take it back to the forest.
   Answer: After the elephant recovers from the illness, people will take it back to the forest.