(2014·济南市名校第四次诊断性测试)—Is the letter from your mother?

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(2014·济南市名校第四次诊断性测试)—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

B

考查情态动词。句意为：——这封信是你母亲寄来的吧？——是的。但这封信不可能是她自己写的，因为她一个字也不认识。根据because引导的原因状语从句可知，此处应用can’t have done表示对过去发生的事很有把握的否定推测。
答案：　B

a letter from your mother 连词成句 is mother letter your this from 山东省实验中学2009级第四次诊断性测试英语单选解析 there is a letter on the desk,it is( )my mother.A.from B.for who is the letter from who is the letter from? The letter is from England. letter is this grandma from your a ) is the letter ( ) your friend 1、in 2、on 3、from What letter is missing from the wall Whom is the letter from?什么意思? Your mother is the dog?