China is expected to export 1 billion mobile phones this year, ________ by a su

题干

China is expected to export 1 billion mobile phones this year, ________ by a surge in demand for smartphones worldwide.

A．drive

B．driving

C．to drive

D．driven

上一题下一题 0.64难度单项选择更新时间:2014-06-07 08:52:19

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