1. Flowers are sold in shops and in the streets.

flowers: số nhiều

sự thật -> hiện tại đơn

2. This street has already been closed because of snow.

already -> hiện tại hoàn 

3. One of the theatres in our city (rebuild) now.

4. This bag was found in the bus yesterday.

yesterday => quá khứ đơn

5. The dress cannot be washed in hot water.

Cấu trúc câu bị động của "can": can be + PII

6. Have your motorbike been repaired yet?

yet -> hiện tại hoàn thành

7. Bags must be left in the classroom.

Cấu trúc câu bị động của "must": must be + PII

8. The engine has just been tested when the manager saw it.

just -> hiện tại hoàn thành 

9. The plan will probably be announced in two days.

probably -> tương lai đơn

10. - What were you doing at 11 o'clock? - We were being interviewed.

were you doing -> quá khứ tiếp diễn