Giúp tớ với ạ mai tớ thi rồi cảm ơn mn nhiều lắm

Các công thức đổi HTHT - QKĐ

S + has/have + V3/ed + for/since + time 

--> S + started / began + to V / Ving 

--> It is / has been + time + since + S+ V2/ed 

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Công thức - bị động:

-Thì QKĐ: S + was/were + V3/ed 

-Thì TLĐ: S + will be + V3/ed 

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1. The floor was cleaned by Mary yesterday.

2. They have played tennis for two months.

3. Our camping plans will be changed tomorrow.

4. She has organised the English club for two years.

5. He has done his homework for two hours.

6. Their homework was done two hours ago.

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