46.Do you know what is the opposite of ‘expensive’ besides cheap?(　　　　 ).

45.He made a (　　　 )(decide) to stay at home rather than go abroad.

44.I decided (　　　 )(go) to USA for further study.

43.Let’s make a (　　　　 )about the problem.(discuss)

42.--How do you like the food I cook?--D(　 　　　).

41.Henan Province is in (　　　　 )(center)China.

40.There are many interesting inventions and ancient things in the m(　　　 ) by the lake.

39.He is very (　　　　 　)(worry) about his exams ,so he often stays (　　　　 )(wake)all night.

38.I am good at g(　　　　　 ),and I can point out several famous mountains in the world.

37.I spent some　 money (　　　 )(buy) some books from that bookstore.