—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

―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

—What do you think we can do for our aged parents？

—You　　　　do anything except that you visit them as often as possible.

1. A.
   don’t have to
2. B.
   oughtn’t to
3. C.
   mustn’t
4. D.
   shouldn’t

—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

—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