1. When did you receive the letter?
2. What do you do after getting up?
3. How often do you brush your teeth?
4. What time does Nga has an appointment?
5. What time does she go to bed?
6. When did you begin to study English?
7. Where do they live?
8. Why do you like Tom and Jerry?
9. Who did you go to disco with?
10. What did she worry about?
11 What make the people different from all other animals
12 when do they do their homework
13 who come to the party alone
14 what do you like
15 what is that
16 c16 ko bt lam nhe
17 what subject does he studies at the university
18 what is it
19 what is your father's job
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