20.(　 )-----______people living near the sea use as much water as they like ?

　　　 -----No, of course not.

　　 A. May　　　　 C. Need　　 D. Must

19.(　 )Oh,my God! Our light is broken. Let’s change the______quickly.

　　 A.cable　　　 B. bulb　　 C. wire　　　 D.battery

18.(　 )The firemen tried their best to put off the fire,_____they failed.

　　 A.or　　　 B. so　　　 C. but　　 D. because

17.(　 )We think water is_____than everything in north-west China.

　　 A.less precious　 B.more precious　 C.precious　 D.much precious

16.(　 )----Is Tony at home now ,please ?

　　　 ---- Sorry, but he will come back from the school meeting_______.

　　 A.in one hour　 B.after an hour　 C.one hour later　 D.about ab hour

15.(　 )In library,we arrange non-fiction books by the_____of them.

　　 A.subject　　　 B.name　　 C.pages　　 D.number

14.(　 )It’s not easy for us to______what we call our school newspaper in such a short time.

　　 A.speak　　　 B.see　　 C.decide　　 D.study

13.(　 )----Thank you for the delicious food.

　　　 ----- _______.

　　 A.I’m glad you enjoyed it　　　　 B.It doesn’t matter

　　 C.I don’t think it’s good　　　　　 D.Don’t say so.

12.(　 )----Excuse me,what’s the meaning of the word”antique”?

　　　 ----Soryy.I’m not sure. Please______the word in dictionary.

A.look for　　 B. look up　　 C. look out　　 D.look after