填空题

How many people are there on earth now Now there are about ______ of us on earth.

【参考答案】

4 billion。
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填空题
The Chinese people are doing things no one (do)______ so far.
单项选择题
A．Zhongshan Street.B．The traffic lights.C．Friendship Hotel.D．A fountain.
A．Zhongshan Street.
B．The traffic lights.
C．Friendship Hotel.
D．A fountain.
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