问题

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

正确答案是：

同类题型

I’ve won a holiday for two to FloridaI _______ my mother

It has been announced recently that all the schools________ not have the students attend school if the students have high temperatures.[ ]

Everyone was when they heard this news.

－Which do you like better， juice or coffee－__________is OK. Thank you!

“He will come tomorrow.” “But I’d rather he _______ the day after tomorrow.”