Haven't I made this clear that you mustn't spit everywhere? (上海会考)
我看不出上面的辨错题有什么错误。
it除了用作形式主语之外，还常常用作形式宾语：占据宾语原有的位置，而让真实宾语（动词不定式、动名词、从句）退居到后面去。在上面的句子里，应将选项A的this改为it。这样，it作形式宾语，而后面的that从句作真实宾语。
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She found it difficult to get along with him. 她发现很难与他相处。
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We thought it no use doing that. 我们认为这样做是没有用的。
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We heard it said that he had gone to Canada. 我们听说他已去加拿大了。
请指出下列各句中的形式宾语及真实宾语并译成汉语：
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They consider it their duty to speak to his parents.
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This has made it necessary for agriculture and industry to develop very quickly.
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Don't you think it wrong wasting your time?
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He found it strange that no one else had arrived.
请做下面的英语试题：
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Do you think to be possible for him to finish writing the letter in five minutes? (高三会考)
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As the busiest woman in Norton, she made ____ her duty to look after all the other people's affairs in that town. A. this B. that C. one D. it(全国高考湖南卷,06-26)
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He didn't make ____ clear when and where the meeting would be held. A. this B. that C. it D. these(全国高考天津卷,07-1)