问题
选择题
The policeman came up to the house, whose door was open, ________ there for a while, and went in.[ ]
A．to stand
B．standing
C．stood
D．stand
答案
答案：C
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The policeman came up to the house, whose door was open, ________ there for a while, and went in.[ ]
A．to stand
B．standing
C．stood
D．stand
答案：C