Решебник по английскому языку 7 класс. spotlight: test booklet Тест буклет. Ваулина Test. Unit 8а

Подчеркните верный вариант ответа.

1. pollute

2. have been trying

3. has been working

4. since

5. has been sleeping

6. out

7. solar

8. some

9. up

10. poisons