Question

【题目】Only in the last few years ________ to understand their learning disabilities and how they can be dealt with．

A．did they beginB．have they begun

C．had they begunD．they began

Answer 1

【答案】B

【解析】在本句中，由于出现了关键性时间状语in the last few years，可知时态要用现在完成时；又因为本句中only提前，后面跟时间状语，故句子中的谓语动词部分倒装。综上所述，可知选B。

句意：只有在过去的几年里，他们才理解他们在学习中的缺陷以及如何去处理它。