—Lookattheboywithgreenhair.It'scool!—ButIdon'tthinkstud...

问题详情：

—Look at the boy with green hair. It's cool!

—But I don't think students ________ to color their hair.

A. should be not allowed

B. should be allowed

C. should allow

D. shouldn't be allowed

【回答】

B

知识点：动词语态

题型：选择题