he __(spehd) half an hour __(practise) __(speak) English
问题描述:
he __(spehd) half an hour __(practise) __(speak) English
答
spent
practising
speakingpractising speaking不是一个加ing就行了吗?搞不懂spend 时间+in(可省略)-doing sth practise + doing sth