单项选择题
Must I take a taxi? No, you（）. You can take my car.
A.had better to B.don't C.must not D.don't have to
单项选择题 Mr. Smith（）me to buy several eggs for the dinner.
单项选择题 Mr. Jones, this is Sean, an English teacher from the United States.（）
单项选择题 Mr. Jones（）in the company for twenty years by the end of next month
