What are the workers building?

What are the workers building? What are the workers building?They are building a big subway The workers are building a tall building改为被动语态 主动变被动 workers are building the building now workers are building the building now 变被动怎么变 Workers are in the new building around the _____. workers are building a____bridge over the yangtze river in n 一道初二被动语态The workers are building a tall building.A tall buil the workers are building a bridge over the river（该被动） 改成被动语态：she give me a book ; the workers are building the roa what are you building! 三句英译中1.with what enthusiasm the chinese people are building