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．
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