1. Tom said that he is learning English in an evening class.
Correction: Tom said that he was learning English in an evening class.

2. The taxi driver told me that he will take me to the hotel.
Correction: The taxi driver told me that he would take me to the hotel.

3. he asked me how long does it take me to go to school by bike.
Correction: She asked me how long it took me to go to school by bike.

4. Uncle John said that he would go to Nha Trang tomorrow.
Correction: Uncle John said that he would go to Nha Trang the next day.

5. A stranger asked me how far was it from my house to school.
Correction: A stranger asked me how far it was from my house to school.

6. The mother asked her son what did he want for his birthday.
Correction: The mother asked her son what he wanted for his birthday.

7. Do you know what was she doing at that time the day before.
Correction: Do you know what she was doing at that time the day before?

8. ​She wanted to know how long did it take to get there.
Correction: She wanted to know how long it took to get there.

9. Nam asked Mai what can he do to help her.
Correction: Nam asked Mai what he could do to help her.

10. Tom asked me did I liked his new motorbike.
Correction: Tom asked me if I liked his new motorbike.

11. He suggested Nga going to school on foot.
Correction: He suggested that Nga go to school on foot.

12. Minh told me that he must go home then.
Correction: Minh told me that he had to go home then.