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．
宋先生加入排球俱乐部已经三年了．
Mr．Song for three years．
我想知道你为什么不允许我熬夜．
I wonder ．
虽然Sandy失败过很多次，但是她从不放弃．
Though Sandy ．
保护野生动物是多么有必要啊！
How !