We were unable to offer that service________we hadn’t got sufficient personnel t

游客2023-09-18  19

问题 We were unable to offer that service________we hadn’t got sufficient personnel to cope with it.

选项 A、although
B、till
C、unless
D、because

答案 D

解析 空白处后面为前面的原因,because此处引导原因状语从句。故选D。
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