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单项选择 适中0.65 引用1 组卷199
We need to take steps to reduce the use of plastic ________ it is too late.
A.althoughB.becauseC.ifD.before
2021·上海黄浦·二模
知识点:althoughbecausebeforeif (如果)if (是否)before引导时间状语从句从属连词辨析 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!