Question

_____ you _____ to go to the park when they were children?

A．Did, use

B．Did, used

C．Do, used

D．Do, use

Answer 1

A

考察时态。根据时间状语从句当他们是小孩子时，可知主语叙述的是过去的动作，故用过去时态，故选A。当句子中已有助动词表明时态时，实意动词要变回原形，故选A。