We were not surprised at ____, for he had worked so hard.
A. what has he achieved B. that what he had achieved C. what he had achieved D. that he had achieved
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The author of the passage advises us _________
A. to use words carefully and accurately B. not to use silly and rude words C. to become a slave of words D. to use emotional words
我国现行建筑安装工程费用构成中，材料二次搬运费应计入（）。
A. This B. That C. What D. Which
Sorry, I don’t know he is a friend of _________.
A. your brother B. your brothers C. your brother’s friend D. your brother’s
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