—Do you know where David is? I can’t find him anywhere.—Well . He have gone far— his coat’

问题补充：

—Do you know where David is? I can’t find him anywhere.

—Well . He have gone far— his coat’s still here.

A. shouldn’t

B. mustn’t

C. can’t

D. wouldn’t

答案：

A. shouldn’t

B. mustn’t

(答案→)C. can’t

D. wouldn’t

解析：情态动词用法辨析。Shouldn’t have done本不应该做某事实际上却做了；can’t have done不可能做了某事；wouldn’t have done不会做某事。句意：他不可能走远，因为他的外套还在这里。