We won′ t keep winning games __________we keep playing well
单项选择题 We won′ t keep winning games __________we keep playing well.
A.because
B.unless
C.when
D.while
正确答案：B
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答案解析:本题考查连词辨析。句意：除非我们继续打好比赛，否则我们不会一直保持比赛的胜利。unless引导条件状语从句，意为“除非，如果不”。because引导原因状语从句；when，while引导时间状语从句
