练习册

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    You can only be sure of you have at present; you cannot be sure of something you might get in the future. A.that;what B.what;/ C.which;that D./;that 答案 B 解析 what引导宾语从句.并在从句中作宾语,that引导定语从句.并在从句中作宾语.可以省略. 【查看更多】

     

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