It is required that all traffic participants should ______ the traffic rules to make traffic safer and faster.
23._____you can’t finish the book in less than an hour, I suppose? _____.
22._____trying to persuade his father to give up smoking, his letter was rejected.
第二部分:英语知识运用(共两节,满分45分)第一节:单项选择(共15小题;每小题1分, 满分15分)21.The experiment turned out to be______ failure, but as we know, Success often comes after_____ failure.
5.What the scientist said sounded strange, ______, they made sense.
Luckily, Chinese medicine is making a difference ______ the disease.