Susan decided not to work on the program at home because she didn't want her par
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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
试题答案
答案:C
解析:过去进行时表示过去某段时间正在发生的事.从主句didn't want可知,现在完成时和现在进行时都是错误的. |