问题
____ that saw the trade between the two countries reach its highest point.
A:During the 1980’s
B:That it was in the 1980’s
C:It was the 1980’s
D:It was in the 1980’s
B:That it was in the 1980’s
C:It was the 1980’s
D:It was in the 1980’s
正确答案是：
