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

问题补充：

—Do you know where David is? I couldn’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：后文说“他的外套还在这里”，据此语境可知“他不可能走远了”，故选can’t。