问题补充:
China a lot in the ten years.
A. changed, past
B. was changed, first
C. has changed, last
D. has changed, next
答案:
A. changed, past
B. was changed, first
(答案→)C. has changed, last
D. has changed, next
解析:句意:中国在过去的十年里变化很大。in the last ten years,在过去的十年里,这个短语应该跟现在完成时连用。故选C。