.英语连词用法练习题(附详解)1. Oh, I failed againDont lose heart. One more effort, _ you will succeed. A. so that B. therefore C. however D. and2. _ a difficult situation, so you should send him a message and give him some advice.A. As he is in B. He is in C. Being in D. He being in3. She said she would work it out herself, _ ask me for help. A. and not to B. but not C. and prefer not D.