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
网友回答
A. am going to bed
B. just about to go to bed
(答案→)C. was about to go to bed
D. have gone to bed
解析:可联系答.案.网客服索取。