问题
About ____of the students in Grade Nine this year were born in the_____.
A:three five; 1996.
B:three fifths; 1990s
C:third fifth; 1997.
D:third fifths; 1990s
B:three fifths; 1990s
C:third fifth; 1997.
D:third fifths; 1990s
正确答案是：
