He _writing the paper now.He hadn't written a single word wh

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He _writing the paper now.He hadn't written a single word when i left him ten minutes ago.
A.shouldn't be B.can't have finished C.can't be D.mustn't have finished
我选的是A 答案为什么是b

can't have finished
1.虚拟语气表猜测,否定式can't 【而不用shouldn't】
2.have finished 现在完成时表完成.
这句要表达的意思是,他现在一定还没有完成作业,十分钟前,当我离开他的时候,他还没有动笔.

He _writing the paper now.He hadn't written a single word wh I don't believe a single word he says. In the bag he found a piece of paper on which were written s In such a hurry _____ that he didn’t say a single word. A book was written on the subject.He has written a book on t I don't b____a single word he says He has never heard a single English word _____.（） T______the exam,he sat there without writing a single word. 请看下句： A: How much bread did the baker have? B: He hadn't muc He came to the party,__he hadn't been invited.A,although B,i If the doctor hadn't come on time,he he cooked at the paper for 3 hours .he didn't say a work .合为