【題目】With the help of computers, people will find it easier to keep the trafficsmoothly.
A.to run
B.run
C.running
D.ran

【答案】C
【解析】句意：在計算機的幫助下，人們會更容易地保持交通順暢。keep...doing sth意為“讓...持續(xù)作某事”。故選C。

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