He stood up,the large door and looked outside. There on the ground lay a white dog.A. ope

发布时间：2020-08-16 15:37:50

He stood up,    the large door and looked outside. There on the ground lay a white dog.
A. opens
B. opened
C. opening
D. having opened

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A. opens
(答案→)B. opened
C. opening
D. having opened
解析：考查时态。句意：他站了起来，打开大门向外看。可知本句是并列谓语，前面谓语为过去时态，故本也为过去时态，选B。
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