1.1..... open the door. It's locked!
A. can't
B. shouldn't C. should
2..... I please go to the party tonight?
A. May
B. Must
C. Mustn't
3.They.play cards for hours when they were teens.
A. could
B. must
C. may
4. We put up our tent here. Camping is forbidden.
A. can
B. mustn't
C. could
5. You avoid eating so many sweets.
A. can't
B. may
C. have to
6. She denied
my wallet.
A. to stel B. steal C. stealing
7. He seems
, tired. He didn't sleep well last night.
A. being B. be
C. to be
8. They suggested to work on foot.
A. going
B. go
C. to go
9. This task is n for me to do. I can't do it.
A. not enough compicated B. too complicated C. not compicated enough
10. You must
A. stop worry
B. to stop worry
C. stop worrying​