老师请回答一下原句是After gazing at the display for several minutes,Mr.Taylor went back into hisshop.He ( )the display for several minutes before re entered his shop.A.was gazing at B.gazed at C.had gazed at D.had been gazing at 本人觉

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老师请回答一下原句是After gazing at the display for several minutes,Mr.Taylor went back into hisshop.He ( )the display for several minutes before re entered his shop.A.was gazing at B.gazed at C.had gazed at D.had been gazing at 本人觉
老师请回答一下原句是After gazing at the display for several minutes,Mr.Taylor went back into his
shop.
He ( )the display for several minutes before re entered his shop.A.was gazing at B.gazed at C.had gazed at D.had been gazing at 本人觉的应该选c 或 d ,但是答案是b 为什么呢?新概念三 课后原题
a 当 "每一"的时候的用法,前面有介词吗

老师请回答一下原句是After gazing at the display for several minutes,Mr.Taylor went back into hisshop.He ( )the display for several minutes before re entered his shop.A.was gazing at B.gazed at C.had gazed at D.had been gazing at 本人觉
1 我告诉你,最好的答案是C. 这本书的练习是由一些中国老师编的,但是质量不高.我可以找到他们的许多错误.

2 没有介词
He comes here once A week / twice A year.

it happens once in a while -----(这个,你要记住.)