I think it must be teenagers _____ fun.
A. to have B. having C. have D. had
I’m ___ tired, but I can’t rest because I have ___ work to do.
A. too much, much too B. too many, many too
C. too much, too many D. much too, too much
–Listen! Helen is singing in the next room. -It ___ be Helen. She has gone to Beijing.
A. can’t B. mustn’t C. may D. should
–Mum, must I do my homework now? - No, you _____.
A. mustn’t B. can’t C. shouldn’t D. needn’t
The headmaster ____ be in the office because the light is on.
A. can’t B. might C. could D. must
1.He ______ (几乎不) goes to the movies on weekends.
2.My bag ______(充满) books.
3.They exercise ______(每周一两次)．
4.They need ______(至少) twenty people.
5.Does he ______(帮助做家务) at home?
