There were no women in the committee 1976 but now women are in a majority.A. before toB.

问题补充：

There were no women in the committee 1976, but now women are in a majority.

A. before to

B. previous to

C. ago

D. earlier

答案：

A. before to

(答案→)B. previous to

C. ago

D. earlier

解析：短语辨析。A.之前 B. 在……以前 C.过去的；以前 D. 更早。句意：在1976年以前，这个委员会没有女人，但是现在女人占大部分了。Ago前接一段时间。故选B。