No matter how fast we worked, . A. we couldn’t catch up with them B. and we coul
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No matter how fast we worked, ____.
A. we couldn’t catch up with them B. and we couldn’t catch up with them
C. so we couldn’t catch up with them D. but we couldn’t catch up with them
试题答案
A
no matter how 引导让步状语从句,故只可选A,构成主从复合句。