1. She said she had never had visited Hanoi earlier (HTHT`->` QKHT; before `->` earlier)

2. Mr. Tan told us not to make noise in that room (Câu mệnh lệnh: S + tell object + not to V(inf); this `->` that)

3. He said he would have to cook lunch by himself (TLĐ `->` would + V(inf)

4. She asked me if/whether I wanted to work at night (Yes/No question: S + reported verb + if/whether + S + V(lùi thì); 

5. Nam and Tuan said they couldn't reach the boss that day (can `->` could; today `->` that day)

6. Minh asked Mai what time Mai had dinner (Wh_qu: S + reported verb + wh.qu + S + V(lùi thì); HTĐ `->` QKĐ)

7. Mrs. Nga said it wasn't easy to make a cushion

8. He asked me to send this parcel to my aunt (Câu đề nghị: S + ask object + to V)

9. I asked him if he would buy a new car for his son the next day (tomorrow `->` the next/following day)

10. We said we were waiting for the school bus then (at the present `->` then; HTTD `->` QKTD)

Ex4/

1. She said she had never had visited Hanoi earlier 

2. Mr. Tan told us not to make noise in that room 

3. He said he would have to cook lunch by himself 

4. She asked me if I wanted to work at night 

5. N and T said they couldn't reach the boss that day 

6. M asked Mai what time Mai had dinner.

7. Mrs. N said it wasn't easy to make a cushion

8. He asked me to send this parcel to my aunt.

9. I asked him if he would buy a new car for his son the next day 

10. We said we were waiting for the school bus then

#morika