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答案:D.考查时态.句意"你正看书的时候我回到家".这里是while引导的时间状语从句,主句用一般过去时态,从句用过去进行时态,结构是was/were+动词的现在分词,主语是you,因此用were,read的现在分词是reading,表示延续性动作.因此答案是D.扩展阅读:texas instruments ... baba is you ... brooks brothers ... baseus bowie e3 ... gopro hero11 black ... simulink bus creator ... a band to your friend ... swissquote bank ... paperpass免费入口 ...