问题
We work together to achieve our common purpose: _________ world that is safer, cleaner and healthier than __________ one we are living in.
A:the , /
B:a , /
C:the , the
D:a , the;
B:a , /
C:the , the
D:a , the;
正确答案是：
同类题型
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____the truth, we’re sure she won’t tell a lie.
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