问题
选择题
—I think teenagers should ___ to get their ears pierced.
—I agree with you.
A. are allowed B. not be allowed C. not allowed
答案
答案：B
考查被动语态。情态动词should的被动结构为should (not) be done结构，故选B项。
搜题请搜索小程序“爱下问搜题”