. —What do you think we can do for our aged parents?—You do anything except to be with th

问题补充：

. —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 to

C. mustn’t

D. can’t

答案：

(答案→)A. don’t have to

B. oughtn’t to

C. mustn’t

D. can’t

解析：don’t have to意为“不必”。句意是：你不必做什么，只需陪陪他们，真诚地对待他们。