Last year another two beautiful bridges over the Jialing River.A. builtB. are builtC. we

问题补充：

Last year, another two beautiful bridges over the Jialing River.

A. built

B. are built

C. were built

D. will be built

答案：

A. built

B. are built

(答案→)C. were built

D. will be built

解析：句意：去年，在长江上建起了另外两座美丽的桥。结合语境可知本句描述的是过去发生的动作，故用一般过去时态。主语是动作对象，故用被动语态，选C。