题目

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 答案：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。-Would you like __________?-No, thanks. I am not thirsty. [     ]A. some orangeB. sandwichesC. breadD. cakes