—Whose schoolbag is this?—It be Mary’s. It has her name on it.A. canB. mayC. willD. must

问题补充：

—Whose schoolbag is this?

—It be Mary’s. It has her name on it.

A. can

B. may

C. will

D. must

答案：

A. can

B. may

C. will

(答案→)D. must

解析：考查点：情态动词辨析。解题思路：书包一定是玛丽的，因为上面有她的名字。