精选优质文档-倾情为你奉上一 . 单项选择（20分） ( ) 1. Im so tired that I can _ run. A. always B. hardly C. usually D. sometimes ( ) 2. The teacher _ us to clean the classroom before class. A. lets B. makes C. has D. wants ( ) 3. I have to_for the math test. A. study B. studying C. learning D. studied ( ) 4. -Your mother isnt at home. Can you _ yourself? - certainly, I can. A. look after
