Nowadays, some robots are very humanlike. They________ walk and dance.
A.can B.must C.may D.should
For the patients' health, everyone in the hospital ________ smoke.
A.can't B.can C.mustn't D.must
You ________ read this passage carefully and find out the correct answer to the question.
A.might B.should C.need D.could
You________ hand in your homework now. You can do it tomorrow.
A.mustn't B.can't C.won't D.needn't
If you ________ fall asleep, drink some milk and listen to some soft music until you feel sleepy.
A.can't B.needn't C.mustn't D.shouldn't
Explaining your thoughts calmly ________ show your parents that you've grown up.
A.should B.can C.need D.must
