In this key university only under special circumstances _______ to take make-up tests.

题目

In this key university only under special circumstances _______ to take make-up tests.
A are students permitted B permitted are students c students are permitted D.are permitted students 为什么选B?

答案

应该选Aonly under special circumstances 前置,主谓要倒装正常的顺序是:In this key university,students are permitted to take make-up tests only under special circumstances.