一些英语,会的过来,顺便说下理由

一些英语,会的过来,顺便说下理由
1、The number of students of my school ____(be) over 600.is 还是are?
2、How much did you ____ this computer?
A、spend in B、pay C、cost D、spend buying
3、I'm sorry you didn't have fun____.
A、in your day off B、on your day off
C、in your off day D、on your off day
4、A number of students___going to the dining hall.The number of them____about 500.
A、are;are B、is;is C、are;is D、is;are
5、All these desks in our classroom are the same in____.
A、long B、lengths C、short D、length
6、different,is,school,a,the,two,big,there,between(连词成句）
7、It's （about fifteen minutes' walk） from my home to the the school（对括号里的提问）
_____ _____ _____ _____ _____ your home to school?
8、He looks like his father.（改写同义句）
He ____ ____ his father.