3.They don't have to / mustn't use the same trademark as us. If they do, we'll sue.
A: don't have to
B: mustn't
C: 无
D: 无
A: don't have to
B: mustn't
C: 无
D: 无
举一反三
- 7.Consumers don't have to / mustn't buy the product. After all, nobody forces them! A: don't have to B: mustn't buy C: 无 D: 无
- If you don’t want to, you ______ to get there with us. A: mustn’t B: can’t C: don’t have D: have not
- We are not allowed to touch it. We ______ touch it. A: mustn't B: mustn't to C: haven't to D: don't have to
- 3.---What do you think we can do for our aged parents? ---You ____ do anything except to be with them and be yourself.A. don't have to B. oughtn't toC. mustn't D. can 't A: A. don't have to B: B. oughtn't to C: C. mustn't D: D. can 't
- You __________ help me if you don't have time. I can do the job myself. A: aren't able to B: don't have to C: mustn't