单项选择题
Mr. Jones（）in the company for twenty years by the end of next month
A.will work B.will have worked C.has worked D.would work
单项选择题 Mr. John was busy,（）he could not come.
单项选择题 Mr Wang is going to teach you maths（）one year.
单项选择题 Miss Wang wanted to know（）for the film.
