问题
选择题
7. I when there came a knock at the door.
A．am going to bed
B．just about to go to bed
C．was about to go to bed
D．have gone to bed
答案
答案：C
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7. I when there came a knock at the door.
A．am going to bed
B．just about to go to bed
C．was about to go to bed
D．have gone to bed
答案：C