问题
选择题
Some old buildings _______ and a new stadium for Nanjing 2014 Youth Olympic Games is being built right there.
A．will be pulled down
B．have been pulled down
C．are pulled down
D．had been pulled down
答案
答案：B
考查时态及语态。句意：一些旧建筑已经被推到，那儿正在建设一座为2014年青年奥运会准备的新体育场。可知前文内容已经发生，且就建筑是动作的对象，故用完成时态，被动语态，选B。