题目内容
The GDP of China has become No. 2 in the world ______ the life of most common people is becoming harder and harder.
A. since B. while C. when D. as
B
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题目内容
The GDP of China has become No. 2 in the world ______ the life of most common people is becoming harder and harder.
A. since B. while C. when D. as
B