Mr Chen __________ his mobile phone to the shop because it can’t work at all.
-----What’s your hobby?-----I _______ listen to music, but now I enjoy dancing.A. am used to B. used to C. am used
----_______ do you brush your teeth?----- Twice a day.A .How much B. How often C. How long
I _____ ask my father to give up smoking. It’s bad for his lungs.A. must B. need C. shouldn’t
It’s cold outside, you’d better not _____ out.A. to go B. go C. going
Why _______ climb mountains this weekend?A. don’t B. didn’t C. not