问题
选择题
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
答案
答案：B
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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
答案：B
