She says that she'll have to close the shop ________ business improves. A. if B. unless C. after D. ...
2022-12-04 22:30:17 54次 2014届河北衡水安平中学高三上期第二次月考英语卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
She says that she'll have to close the shop ________
business improves.
A.
if B.
unless C.
after D. when
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