问题
选择题
A new bridge over the river now ,You can see many railway workers and engineers working every day．
A．is built
B．is being built
C．has been built
D．should be built
答案
答案：B
题目分析：句意：在河上正在建一座新桥,你可以看到很多铁路工作人员和工程师在工作.主语是动作的承受者,有now用现在进行时,结合句意，故选B
