【Thenewprintingmachine-----lastweekisofgreathelptoourteaching.A.wasboughtB.boughtC.havingbeenbought】
2021-12-16 45次 反馈错误 加入收藏 正确率 : 100%
题目内容：
The new printing machine ----- last week is of great help to our teaching.
A.was bought B.bought C.having been bought
优质解答
B
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