The first computers were built in the 1940s. They were even ____(big) than cars.

——从新城到旧城中心有多远？
——坐地铁不到30分钟。
—How far is it from the New Town to the old city centre?
—____ ____ 30 minutes by underground.

根据所给的单词的适当形式填空。
Zhengzhou is a ____ city now because more and more trees are planted every spring.(green)