His parents asked him to buy books ______ he found useful and necessary for his

游客2024-07-02  9

问题 His parents asked him to buy books ______ he found useful and necessary for his study.

选项 A、whichever
B、whatever
C、whenever
D、however

答案 B

解析 该题考查的是宾语从句。句意:他的父母亲要他买任何他认为有用的或学习必需的书籍。whatever修饰books,引导宾语从句。
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