`1.` A new shirt was bought by Mai yesterday.

`2.` Huong said that she would go to Ha Noi the following day.

`3.` It's very interesting to learn English.

`4.` Would you mind giving me the bag?

`5.` She asked me if the Great Wall was in China.

`6.` The poem was written by Clement Clarke Moore in 1823.

`7.` The children said that they was waiting for the school bus.

`8.` My mother said stay at home and tidy my room.

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`\text{Giải thích:}`

`+)` Bị động quá khư đơn: So + was/were + P2 .... + by + Os ... + thời gian.

`+)` Trần thuật gián tiếp: S + said (+O) (that) + S2 đổi ngôi + V lùi thì ...

`+)` Câu hỏi gián tiếp: S + asked (O) + if/wh- + S2 đổi ngôi + V lùi thì ...

`+)` mind + V_ing

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