38.　　 How much we are paid　 ______ (决定于)on how hard we work.Beijing is in the n_________ of China.

37.　　 We must walk to the village. There is no other m_____of going there.

36.　　 There are sixty m_____ in an hour, And there are 24 hours in a d______.

35.　　 It t_______ me half an hour to do my homework every day.

34.　　 If you have a cold, you should _________(吃) some medicine.

33.　　 He goes to the supermarket　 o____ a week.

32.　　 Boys are always a_______ in PE classes.

31.　　 We must _________ (保 持 ) our classroom clean.

30.　　 Can I help you?----Of c_____, I’d like a hamburger, please.

29.　　 The weather here is so cold, I can h______ stand it.