489.I have no idea________ he will come back.A.whereB.whenC.whatD.that【精析与答案】 B求详解

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489.I have no idea________ he will come back.A.whereB.whenC.whatD.that【精析与答案】 B求详解
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489.I have no idea________ he will come back.A.whereB.whenC.whatD.that【精析与答案】 B求详解
489.I have no idea________ he will come back.
A.where
B.when
C.what
D.that
【精析与答案】 B求详解

489.I have no idea________ he will come back.A.whereB.whenC.whatD.that【精析与答案】 B求详解
选择B 我不知道他什么时候会回来,楼主要选什么选D吗?意思不对啊,如果填 whether意思就对了

b

b. 我不知道他什么时候会回来。