Water______bechangedintogas,butit______beheatedtoitsboilingpoint.
A: must;can
B: may;needn’t
C: can;must
D: need;may
A: must;can
B: may;needn’t
C: can;must
D: need;may
举一反三
- They needn't leave home for shopping in the future, ______ they? A: need B: can C: must D: may
- You ___ hand it in at once, you may hand it in tomorrow. A: needn't B: may not C: can't D: must not
- — ____ I do the laundry first?— No, you ____. You can do your homework first. A: Must; mustn’t B: Can; mustn’t C: Must; needn’t D: May; needn’t
- _____I take the newspaper away?No, you mustn’t, you _____ read it only here. A: Must, can B: May, can C: Need, can D: Must, need
- ——May I go now？----No, you ____ . You ____ stay here. A: needn't； has to B: mustn't； have to C: can't； must D: needn't； must