问题补充:
China is known greatly in terms of its cultural values over the past few years.
A. to change
B. having changed
C. changing
D. to have changed
答案:
A. to change
B. having changed
C. changing
(答案→)D. to have changed
解析:句意:大家都知道在过去的几年里面,中国就文化价值方面大大改变了。这里使用了Sb/Sth is known to have done 的句型,因为是over the past few years,所以change这个动作已经发生了,用不定式的完成式,选D。