用ten percent of画线后,怎么对划线部分提问?

问题描述:

用ten percent of画线后,怎么对划线部分提问?
清帮忙看一下这道题!对划线部分提问“ten percent of students always use internet.",ten percent of是划线部分,请问用什么疑问词?
那个,还有一道题,i enjoy playing computer games,but i can not ( )too much time( )that.
A take, doing B spend ,doing C spend, for doingD take,, to do怎么选啊?
最后一个问题,what do you think of the best way to relax?这句话有没有错误?是不是用think about?但是这俩好像可以互换??

How many of students always use internet.
B spend ,doing
spend time (in) doing sth
what do you think of the best way to relax?这句话没有错误,也可以用think about可是只让填两个空,就是( )( )students always use internet还有帮我看一下新加的两道题,谢谢!!那就 How many吧