She says that she'll have to close the shop business improves.A．if B．unless C．after D．when 题目和参考答案——青夏教育精英家教网—

题目内容

She says that she'll have to close the shop ________ business improves.

A．if

B．unless

C．after

D．when

解析试题分析：考查连词：A. if如果，B. unless除非，如果不，C. after在…后面，D. when当…时候，句意：她说她将不得不关掉商店，如果生意没有改善的话。选B。
考点：考查连词

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