He failed in the exam,and I wonder ___ he studied hard in the school.A.when B.that C.if D.where

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Hefailedintheexam,andIwonder___hestudiedhardintheschool.A.whenB.thatC.ifD.whereHefailedintheexam,and

He failed in the exam,and I wonder ___ he studied hard in the school.A.when B.that C.if D.where
He failed in the exam,and I wonder ___ he studied hard in the school.
A.when B.that C.if D.where

He failed in the exam,and I wonder ___ he studied hard in the school.A.when B.that C.if D.where
答案C 本题failed是关键词,C项符合题意,意为:是否.查看原帖>>