John go there with us tonight but he isn’t sure about it.A. mustB. canC. willD. may

问题补充：

John go there with us tonight, but he isn’t sure about it.

A. must

B. can

C. will

D. may

答案：

A. must

B. can

C. will

(答案→)D. may

解析：考查情态动词表推测。must必须，can能，会，will将要，may可能，根据题中but he isn’t sure about it.表示没有把握的推测用may，故选D。