Tổng hợp:
1. He asked Ba who had written that book.
2. She asked me if I stayed at home the previous night.
3. Hoa said she was very tired then.
4. Lan asked her mother where she went every evening
5. He invited me to come his house for dinner. 
6. Ba suggested that we should go jogging./ suggested going jogging.
7. We said the test wasn't easy enohg for us to do.
8. He asked her how she had been the previous day.
9.Nga said to us that she hadn't seen that film for a long time.
10. Ha said she had wanted to know how to use that computer. 
11. Nam asked if I could help him.
12. He asked me if I played soccer well.
13. The teacher asked me where I had gone the previous day.
14. He told us to open our books.
15.  He asked me if I was a student then.

1. He asked Ba who had written that book.
2. She asked me if I stayed at home the previous night.
3. Hoa said she was very tired then.
4. Lan asked her mother where she went every evening
5. He invited me to come his house for dinner. 
6. Ba suggested that we should go jogging./ suggested going jogging.
7. We said the test wasn't easy enohg for us to do.
8. He asked her how she had been the previous day.
9.Nga said to us that she hadn't seen that film for a long time.
10. Ha said she had wanted to know how to use that computer. 
11. Nam asked if I could help him.
12. He asked me if I played soccer well.
13. The teacher asked me where I had gone the previous day.
14. He told us to open our books.
15.  He asked me if I was a student then.