Susan decided not to work on the program at home because she didn’t want her parents to kn
Susan decided not to work on the program at home because she didn’t want her parents to kn
发布时间：2020-08-15 01:48:38
Susan decided not to work on the program at home because she didn’t want her parents to know what she . A. has done B. had done C. was doing D. is doing
网友回答
A. has done B. had done (答案→)C. was doing D. is doing 解析：过去进行时可表示过去某段时间一直进行的动作。