问题:
Nowadays everyone is responsible for________a harmonious society in China.
[ ]
A. making up
B. taking up
C. opening up
D. building up
Nowadays everyone is responsible for________a harmonious society in China.
B. taking up
C. opening up
D. building up
[ ]
A. making up B. taking up
C. opening up
D. building up
参考答案: