20．-Happy Birthday, Amy, and a gift for you.

　 　　 -That's just what I want._____!

　　　 A．Cheers　　　 　　　 B．Good luck　　 　 C．Come on　 　　　　 D．Congratulations

19．After twenty years as a chain smoker, Mr．Nather finally _____ the habit.

A．gave out　　　 　 B．gave back　 　　　　 C．gave up　　 　　　 D．gave away

18．By using the air ambulance to transport patients _____ hospitals, they can win more time for serious cases.

　　 A．inside　　 　　　　　 B．during　　　 　　 C．through　　 　　　　 D．between

17．-Joan _____ a month's vacation.

　 　　 -That's nice．If time permits, I will go with her.

　　　 A．is taking　 　　　　 B．was taking　　 　　 C．has taken　　 　　　 D．took