If law - breakers ________, the society will be in disorder.

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I couldn't ________ what they were saying, for they spoke to me at once.

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The American soldiers ________ Iraq kissed their family goodbye and left in a hurry.

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The Chinese in many places of the world ________ the old tradition.

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They began to think about what use could be ________ such materials.

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I wonder why Mr Green looks worried today.

I'm not sure, but he ________ a small accident driving here.

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When was it ________ you met him in the library?

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________ there is a tree on either side of the road.

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Who did the manager ________ the work?

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The building over there is a school, ________ is a square.

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