同义句转换:We should finish our homework on time.We _ _ _ finish our homework on time.

问题描述:

同义句转换:We should finish our homework on time.We _ _ _ finish our homework on time.

如果是两空,答案当然是:ought to
但如果是三空,则答案是:are supposed to
即:should do sth = ought to do sth = be supposed to do sth 应该/应当做某事