She says that she’ll have to close the shop ________ business improves.(2013·江西，

题型：不详难度：来源：

She says that she’ll have to close the shop ________ business improves.(2013·江西，28)

A．if	B．unless
C．after	D．when

答案

解析

B
解析　本题考查状语从句的引导词。句意为：她说，除非生意好转，否则她只能关掉店铺。if如果；unless除非，如果不……；after在……之后；when当……的时候。根据句意，B项符合题意。