Beijing is a big city and Shanghai is a big city,too.(保持意思不变)Beijing is a big city and Shanghai is a big city,too.Beijing is a big city and Shanghai is a big city,too.(保持意思不变)改为__ __beijing __Shanghai is a big city.
问题描述：
Beijing is a big city and Shanghai is a big city,too.(保持意思不变)
Beijing is a big city and Shanghai is a big city,too.Beijing is a big city and Shanghai is a big city,too.(保持意思不变)改为__ __beijing __Shanghai is a big city.
答
Both of and
答
Not only, but
不仅，而且
连接并列主语，注意谓语动词用就近原则。
答
Not only Beijing but also Shanghai is a big city.
北京和上海都是大城市.