题目内容
湖南省2011届高三十二校第一次联考
How can you expect him to make any improvement you never give him an opportunity to have a try？
A．unless B．when C．until D．while
B
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题目内容
湖南省2011届高三十二校第一次联考
How can you expect him to make any improvement you never give him an opportunity to have a try？
A．unless B．when C．until D．while
B