quarter，is bad for，divided，expensive，clearly，

a number of，by hand，keeps secrets，pocket money

46．Jenny is my true friend and she always　　for me．

47．There are　　people swimming in the lake at present．

48．The meeting will begin at a　　past eight．Let's hurry．

49．I like this bike，but it's too　　for me to buy．What a pity!

50．It's kind of Lucy to donate some of her　　to the students in poor areas．

51．The students are usually　　into six groups to discuss questions in class．

52．Paul sits in the front of the classroom so that he can see the blackboard　　．

53．We shouldn't eat too much sugar because it　　our teeth．