Please find a time when your parents———go to mall.

问题描述:

Please find a time when your parents———go to mall.
A:both can
B:all can
C:can both
D:can all
为什么?告诉我一些关于can 的用法
就说说can在句子中,与动词、系动词的位置

Please find a time when your parents___can both__go to mall