jack spends half an hour playing table tennis every day同义句转换

问题描述:

jack spends half an hour playing table tennis every day同义句转换
(it)(take)jack half an hour (to)(play)table tennis every day
为什么这么填

这应该是“花费”这之间的同义句装换,speng doing sth=take to do sth,it应该做的是形式主语.
指的是花费时间