问题

Is the letter from your mother?—Yes. But she ________ the letter herself, because she doesn’t even know one word.

A:needn't have written
B:can't have written
C:might not have written
D:should not have written

正确答案是：

同类题型

You should read the article as ____ as I do to know what the writer really wants to tell us.

Thirty percent of the cattle ________ thin, but the rest ________ fat.[ ]

In China, the number of cities is increasing ______ development is recognized across the world.

Could you tell me

I think students should have mobile phones to call their parents.—_____. They often use them to play games instead.