The bridge have been built for 3 years. 改为主动形式

网友回答

Someone built the bridge 3 years ago.
人们于三年前建造了这座桥.
======以下答案可供参考======
供参考答案1:
People have built the bridge for 3 years.
供参考答案2:
we(peaple) built the bridge 3 years ago.