问题描述：
—______my dictionary?I can't find it anywhere.—I_____it on the shelf when I came in.
A.Did you see;have seenB.Have you seen;have seenC.Have you seen;sawD.Did you see;saw
A.Did you see;have seenB.Have you seen;have seenC.Have you seen;sawD.Did you see;saw
问题解答：
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