she often spends half an hour ( )the foor every week.a;washing b;wash c;to wash并告我为社么
问题描述：
she often spends half an hour ( )the foor every week.a;washing b;wash c;to wash并告我为社么
答
正确：a spend some money/time (in）doing/on sth
答
选a
spend + time + (in) doing sth 固定搭配