John loves reading,so he often gets lost in ____

John loves reading,so he often gets lost in ____
he is reading and doesn't take a break.
A.that B.what C.when D.while
英语人气:991 ℃时间:2019-12-20 06:54:25
优质解答
B what在这里引导了一个宾语从句,what在从句中做的是reading的宾语
若用A that,应是lost inthe book that he is reading
CD显然都不对
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