题目内容

【题目】I'm not sure where my necklace is, but I have a pretty good idea who________it．

A. take B. took

C. had taken D. will take

【答案】B

【解析】根据“but”，两个并列句构成转折关系，因此我不清楚项链在哪（“I'm not sure where my necklace is t”）是“现在状态”，有人把项链拿走了（“who took it”）是“过去动作”，因此用一般过去时。句意：我不确定我的项链在哪，但是我很清楚谁把它拿走了。

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