While John______, his brother is playing records.

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问题 While John______, his brother is playing records.

选项 A、reads
B、is reading
C、has read
D、has been reading

答案B

解析 while意为“当……时候(during the time that)”,它所引导的时间状语从句中谓语动词所表示的动作通常和主句中的谓语动词同时发生,例如:You will learn a lot fromhim while you are working with him.在你与他共同工作过程中,会从他那里学到很多东西。根据句子结构,B为唯一正确答案。
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