Peter come with us tonight but he is not very sure yet . A. must B. may C. can D. will

问题补充：

Peter come with us tonight , but he is not very sure yet .

A. must

B. may

C. can

D. will

答案：

A. must

(答案→)B. may

C. can

D. will

解析：may / might 用于陈述句，表示推测，其语气较 must , can\t 弱得多。