Question

--- The bridge       outside the school annoys the students awfully.
--- Actually, we don’t know when it will be completed.

A．to be built

B．to build

C．being built

D．having been built

Answer 1

C

本题考查非谓语动词。句中being built作定语，修饰名词the bridge，表示“正在被建筑的大桥”。故选C。