急!关于 until 和 unless单项选择
急!关于 until 和 unless单项选择
You needn't getmuchworriedabout a cough _____it lasts five or more days.
A.until B. unless
答案选unless ,求分析until为什么不对
You needn't get much worried about a cough____ it
You needn't getmuchworriedabout a cough _____it lasts five or more days.
A.until B. unless
答案选unless ,求分析until为什么不对
You needn't get much worried about a cough____ it
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