问题补充:
They usually spend two hours their homework every day.
A. do B doing C to do
答案:
解析:spend ( in ) doing sth.是固定用法,意思是花费时间干某事,故选B
时间:2020-03-06 13:58:40
They usually spend two hours their homework every day.
A. do B doing C to do
解析:spend ( in ) doing sth.是固定用法,意思是花费时间干某事,故选B