Question

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

A．if

B．unless

C．after

D．when

Answer 1

B

考查状语从句。根据句意：如果生意没有好转，她就只得关店铺。unless＝if...not(如果不)，故答案选B。