修改同义句(英语),
问题描述：
修改同义句(英语),
He`s interested in mountain biking.
During the summer of 2000,he spent four weekson a summer camp.
答
He takes an interest in mountain biking.During the summer of 2000, he spent four weeks (in) going summer camping.orDuring the summer of 2000, a summer camp cost him four weeks.