Giải bài tập cho mình với

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1. The flowers should be watered regularly.
2. He said that he had decided to become an astronomer.
3. I suggested going abroad for our holiday.
4. While I was having dinner, the phone rang.
5. If I knew the answer, I could tell you.
6. If the people protect the environment now, it will be nice.
7. Mnay houses in this village were destroyed by the storm last week.
8. Was food given to homeless people by them last year?
9. Despite the bad weather, the football match was not canceled.
10. Because of having a bad cold, she didn't go to the circus with Betty.

11. Unless she works hard, she won't pass his exam.
12. Before we took a look around the shops, we had had lunch.
13. By the time we got out of the office, the light had gone out.
14. By the time we started our work, she had explained everything clearly.
15. Before my mother came home, my father had watered all the plants in the garden.
16. Before we took the homeless people to the temporary accommodation, we had provided food to them.
17. After the wind had blown strongly, the roofs of the houses were taken off.
18. That film has been seen three times.