单项选择题
No matter how hard he worked, ()
A. he could not do any better B. and he could not do any better C. so he could not do any better D. but he could not do any better
单项选择题 They have two teams, and () have a good chance of winning.
单项选择题 He is sitting () of the car with the driver.
单项选择题 The family is too poor to () the three children () school.
