帮忙写出正确答案在括号中添（帮忙写出答案为什么是这个.知识点应该是初2的!

帮忙写出正确答案在括号中添（帮忙写出答案为什么是这个.知识点应该是初2的!
1.I don't think it very expensive to buy a family computer here.
Ready?I'llbuy( )next week .
2.Lucy made several kites,but( )of them flied high in the sky.
3.Do you have( )te tell us?
4.She always thinks of( )more than herself.
5.there is( )with my computer.It doesn't work.
6.I asked him for some eggs,but he hadn't( ).
7.Mike has one blue ruler and two black( ).