Question

向英语高手请教

( ). ______ he ______ take an active part in rebuilding the old city walls?
A. Did, use B. Used, to C. Did, used to D. Use, to
给出答案，并说明为什么

Answer 1

B). ______ he ______ take an active part in rebuilding the old city walls?
A. Did, use B. Used, to C. Did, used to D. Use, to
usted to do sth过去常常做某事
进行句型转换时，可以用did,也可以用used

Answer 2

C 过去时态 used to do 是过去做过而现在不再做的事情

Answer 3

我不会，但我觉得这道题很无聊