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1、Yesterday the meeting --------,because she had to --------

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1、Yesterday the meeting --------,because she had to --------her mother’s
A was called for ,call up
B was delayed,call in
C was put off ,call on
D was called off,call at
2、Her advice _______great value.
A is turned out to be
B turn out of
C does prove of
D is proved to be
3、...He must have gone to see the movie last night,______he?
...No He ____have ,for I saw him doing his homework in the classroom.
A mustn’t ,mustn’t
B can’t,may not
C didn’t,can’t
D hasn’t,can’t
最好说明为什么?
the answer:D C C please tell me why do you choose the answer
1.D
第一空可用be called off 或者 be delayed 作为被耽误,延期的意思
第二空根据句意,她因为( )她妈妈家,所以昨天的会议耽误了.应选,call at 拜访,即去她妈妈家,拜访她妈妈
2.C
首先应该猜到句意大概是 她的建议(表现出,呈现出,被证明)有很大的价值.of great value ≈ valueable 所以第二空选带 of 的,表达“表现出,呈现出,被证明”意思的有 prove ,turn out to be ,p.s.prove无被动形式,后面可直接跟名词形容词和一些词组,可以说它是以主动的形式表示被动的意思
3.C
第一空 表示对昨晚(即,一个过去的时间)的他的猜测的反意疑问句,应按猜测的事情发生的时间来用时态,所以用一般过去时进行反问,选didn't ,第二空,推断某人不可能做某事---对可能性的推断,情态动词应该用can