-I saw Jim and your brother in the park yesterday morning.-they ---- skating there,right?
A.practiced B.were practicing C.have practiced D.have been practicing
人气：159 ℃ 时间：2019-12-12 21:38:21
解答
选B
看见某人在做某事,用现在进行时,因为是昨天,所以用过去进行时.
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