—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 toB．oughtn’t to
C．mustn’tD．shouldn’t
A
考查情態(tài)動(dòng)詞。根據(jù)題干意思所填詞意思是：不必，選A。
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