The noise of the traffic sometimes is ___________.

We had to ________ a lot of noise when the childre

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The usual symptoms of cavitation in a centrifugal pump is _____.A.noise and vibrationB.an

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The birthday of the ______ is sometimes served as the National Day of Britain.A．head of th

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______is sometimes called the "backbone of England".A．The Sperrin MountainsB．The Cambrian

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The traffic was making so much noise that I couldn’t hear what he________ .A.is sayingB.wa

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The question of ______ the traffic accident happened hasn been answered yet though the

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The highest ______ of governments has been given to the problem of heavy traffic.A.prideB.

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