20．---$ 500, but this is my last offer．　　　

---OK, it is a __________．

　 A．cost　　　　　　 B．price　　　　 　 C．reward　　　 　　　 D．deal

19．The news is made ________ to everyone throughout the world that our Chinese athletes have won 5 gold medals in the Winter Olympics．

　 A．be known　 　　　　 B．to be known　 　 C．to know　 　　　　 D．known

18．When on holidays, the railways put on _______trains to make people’s travel more convenient．

　　　 A．special　　　　　　　　 B．regular　　　　　　　　 C．particular　　　　　　 D．unusual

17．--- Ring me at six tomorrow morning, will you?

--- Why that early? I ______ ．

　 　 A．will be sleeping　　　　　　　　　　　　　　　　　 B．have slept　　　　　　 　

　 C．have been sleeping　　　　　　　　　　　　　　　 D．will sleep

16．It makes his life quite different ________he has received education abroad．

A．that　　　　　 　 B．which　　 　　　　 C．what　　　　 　　 D．how

15．_______ you call me to say you are not coming, I’ll see you at the theatre．

　 　 A．Until　　　 　　　 B．If　　　　　 　　 C．As　　　　　　 D．Unless