English is a language that many people around the world not speak perfectly but at least u

问题补充：

English is a language that many people around the world not speak perfectly but at least understand．

A. may，can

B. would，might

C. can，must

D. should，can

答案：

(答案→)A. may，can

B. would，might

C. can，must

D. should，can

解析：此题重点考查情态动词的基本用法，may表示的可能性比较小，而can经常表示一种能力。