Rarely________by car at that time.Their parents were poor to buy one.A.they went to schoolB.did they go to school C.they didn't go to school D.did they not go to school应该选哪个答案呢?为什么?

问题描述:

Rarely________by car at that time.Their parents were poor to buy one.A.they went to school
B.did they go to school C.they didn't go to school D.did they not go to school
应该选哪个答案呢?为什么?