He is an ________ person.

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Though he is a (an) ________ worker, he works very hard.

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Last night a hotel caught fire and the whole building ________. Which is wrong?

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It was difficult to guess what her _______ to the news would be.

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She decided to ________ the stage when she was very young.

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E-mail is short for ________ mail.

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Electricity was ________ because of the earthquake.

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I don't know whether it is a chemical ________.

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Metals expand when they are heated and ________ when cooled.

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Iron ________ when it's heated.

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