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 doing D 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？？

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 doing D 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？？