the teacher insisted that we __ our homework before 9:00 o'clocka_英语解答

the teacher insisted that we __ our homework before 9:00 o'clock
a.finishb.had finished
答案是a但是后面有个before所以我一开始想的是用完成时态。求高手解答

人气：365 ℃　时间：2019-09-22 09:33:04

解答

选A.insist后面的从句要求使用虚拟语气,形式为should+动词原形,其中should 可以省略,所以就剩下动词原形.