—Where is Xiao Wang? —I dont knowHe be in the library.A. canB. mustC. mightD. may

问题补充：

—Where is Xiao Wang?

—I don know．He be in the library.

A. can

B. must

C. might

D. may

答案：

A. can

B. must

(答案→)C. might

D. may

解析：might表示毫无把握的猜测。can比may的肯定性要稍微大一些，must为实事肯定。

【标签】情态动词