未知题型
The Chicago marathon was founded in 1970, is one of the world"s most popular marathon, after the Boston marathon.
【参考答案】
The Chicago Marathon, founded in 1977, is one of the world's......
(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)
点击查看答案
