秋思张籍阅读理解答案:改写句子

来源:百度文库 编辑:高校问答 时间:2024/05/15 11:18:06
It's fast to travel by underground.It is safe travel by underground.(合并为一句)
It's ____ _____ fast ____ ____ safe to travel by underground.

not only……but also

It's both fast and safe to travel by underground