Question

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

A．if

B．unless

C．after

D．when

Answer 1

B

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。