Упр. 3

1. He is catching fish for dinner.

2. We are studying the climate.

3. Those crocodiles is not sleeping.

4. I am watching a TV programme about polar bears.

5. They are not doing their homework.

6. She is writing a book about whales.

7. You are not listening to me.

Упр. 4

1. Is the climate changing? Yes, it is.

2. Are tigers becoming extinct? Yes, they are.

3. Are you talking to Billy? No, I am not.

4. Is that female bear protecting her baby? Yes, she is.

5. Are we learning new vocabulary? Yes, we are.

6. Are your friends running in the park now? No, they are not.

7. Is Jack looking for his book? No, he is not.

Упр. 5

1. a. We watches TV every day.

  b. We are watching a good documentary now.

2. a. I swim in the sea every year.

   b. Oh no! That shark is swimming towards us.

3. a. He is eating in a restaurant at the moment.

   b. He usually eats at home.

4. a. Humans sometimes hunt animals for sport.

   b. Look! Those men is hunting baby seals.