After becoming a member of the WTO, China will open more service areas step by step.

A. Women usually worked outside the home for wages
B. Men’s and women’s roles were easily exchanged in the past
C. Men’s roles at home was more firmly fixed than women’s
D. Men’s and women’s roles were usually quite separated in the past

A. think of money
B. look at each other
C. pay attention to it
D. stop crossing the street