Nomatterhowfastweworked,______.A.wecouldn’tcatchupwiththemB.andwecould

发布时间：2020-08-14 02:41:09

No matter how fast we worked, ______.A.we couldn’t catch up with themB.and we couldn’t catch up with themC.so we couldn’t catch up with themD.but we couldn’t catch up with them

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A解析no matter how 引导让步状语从句,故只可选A,构成主从复合句。
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