精选优质文档-倾情为你奉上九年级英语(上册)M3巩固练习一、单项选择。1.I was ill, I didnt go to school yesterday.A. because B. but C. so D. and2. She is one of in our hospital A. busiest doctors B. the busiest doctors C. the busiest doctor D. busier doctors 3.Tom was busy taking a training class,_ we had to wait for him for half an hour. A. so B. if C. or D. but4.- The final exam is coming. You should computer. -Yes, I will.A. stop to pl