问题详情

---Sorry, Professor Smith. I didn't finish the assignment yesterday.---Oh, you_______ have done it as yesterday was the deadline.


A、must

B、mustn't

C、should

D、shouldn't

时间:2021-07-23 04:56 关键词:

答案解析

C
此处表示和过去事实相反的情况,应该用should + have + 过去分词。本来应该做,而未做