—Do you know where the headmaster is? I have something urgent.　　　　—Oh he have gone far

问题补充：

—Do you know where the headmaster is? I have something urgent.

—Oh, he have gone far, for the computer is still on in the office.

A. won’t

B. mustn’t

C. can’t

D. wouldn’t

答案：

A. won’t

B. mustn’t

(答案→)C. can’t

D. wouldn’t

解析：情态动词用法题。can’t表推测“不可能”，句意：你知道校长在哪么？他不可能走远因为他办公室的电脑开着。