The men will have to wait all day the doctor works faster. [ ] A.ifB.unless C.wh
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The men will have to wait all day ________ the doctor works faster.
[]
A.ifB.unlessC.whetherD.that
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答案:
解析:unless表示条件,相当于if...not,意为“除非”,符合语境。题意:除非大夫快点工作,否则这些人得等一天。 |