As is natural a man as old as he be very forgetful.A. can 　　　　B. should 　　　　C. wouldD. m

问题补充：

As is natural, a man as old as he be very forgetful.

A. can

B. should

C. would

D. must

答案：

(答案→)A. can

B. should

C. would

D. must

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