1. —What do you think we can do for our aged parents？
—You do anything except that you visit them as often as possible.
A. don’t have to B. oughtn’t to C. mustn’t D. shouldn’t
[解析]考查情态动词。根据题干意思所填词意思是：不必，选A。难度中等。
2. -----Is it good to look up every new word when I come across it in reading?
-----No. You _______ because you are likely to guess the meaning from the context.
A. can’t B. mustn’t C. don’t have to D. shouldn’t
