题目内容：

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.

优质解答

Not only Beijing but also Shanghai is a big city.
北京和上海都是大城市.