问题
Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous.
A: mustn’t
B:ought not to
C:needn’t
D:don’t have to
B:ought not to
C:needn’t
D:don’t have to
正确答案是：
同类题型
I think he’s been drinking, _________ I’m notcompletely sure.
I regret ______ that I’m too busy ______ inthe talk.
What do you think of their marrage? ——-___________ , if I were Kate, I would not marry him.
We have a high regard for Mr. Smith because he always tries to ______ his principles. [ ]
What are you planning this weekend— I don’t know. Maybe I will visit my grandparents.