Exercise 3. Present Perfect Continuous Put the verbs in the correct form. 1. They (burn) waste near the river, 2. We (study) environmental problems. 3. She (work) for an eco-organisation. 4. Factories (emit) toxic gases. 5. He (clean) the beach all morning. 6. Scientists (observe) climate change. 7. People (cut) down forests. 8. The government (try) to reduce pollution.

Ответ: 1. have been burning, 2. have been studying, 3. has been working, 4. have been emitting, 5. has been cleaning, 6. have been observing, 7. have been cutting, 8. has been trying

1. They have been burning waste near the river.
2. We have been studying environmental problems.
3. She has been working for an eco-organisation.
4. Factories have been emitting toxic gases.
5. He has been cleaning the beach all morning.
6. Scientists have been observing climate change.
7. People have been cutting down forests.
8. The government has been trying to reduce pollution.

Ответ: 1. have been burning, 2. have been studying, 3. has been working, 4. have been emitting, 5. has been cleaning, 6. have been observing, 7. have been cutting, 8. has been trying