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I asked him what he was doing. [ ] A.was he sure to knowB.did he know for sure C

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I asked him what he was doing. [ ] A.was he sure to knowB.did he know for sure C

I asked him ________ what he was doing.

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A.was he sure to knowB.did he know for sureC.whether be sure knewD.if he was sure he knew

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