问题
选择题
Though we don’t know what was discussed, yet we can feel the topic_____.
A．had changed
B．will change
C．was changed
D．has been changed
答案
答案：D
从what was discussed，可知事情已经发生。从can feel可知说的是现在的情况。应用完成时，表示过去一动作对现在造成的影响。又topic 对change是被动关系。故选D。