Choose the correct answers

6. Today we learnt _______ to use the new machine.
A. what B. why C. how D. who
7. Chocolate is not good _______ your teeth.
A. at B. for C. on D. with
8. “_______ do you go to the dentist?” “Twice a year.”
A. How many B. How often C. When D. What
9. “I have a toothache.” ---- “_______”
A. Let’s go and see a doctor. B. Why don’t you see a dentist?
C. How about filling your tooth? D. No problem.
10. May I have _______ sugar?
A. one B. any C. some D. a
11. His idea is quite different ___ mine.
A. with B. of C. from D. on
12. Students have two ___ each day.
A. 20- minute break B. 20-minutes break
C. 20-minute breaks D. 20-minutes breaks
13. Would you like ___ to music?
A. listening B. to listen C. listen D. listens
14. ___ don’t you come to my house? – OK. Let’s go
A. Why B. Let’s C. when D. What
15. Tam enjoys ___ soccer.
A. playing B. to play C. plays D. play

lm hộ tui vs ạ