问题
选择题
We work together to achieve our common purpose：_________world that is safer, cleaner and healthier than one we found．
A．the；the
B．a；不填
C．a；the
D．the；不填
答案
答案：C
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We work together to achieve our common purpose：_________world that is safer, cleaner and healthier than one we found．
A．the；the
B．a；不填
C．a；the
D．the；不填
答案：C