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Question 1/
1. The teacher asked students not to talk in class.
2. She asked me to help her repair her house.
3. The doctor said to Nga that she should stay in bed.
4. Mrs.Lan told children to look after themselves.
Question 2/
1. I have known my English teacher since September.
2. This is the most interesting book I have ever read.
3. The boy always spends much time playing games.
4. When Jane was younger, she used to sing a jazz band.