In recent years there has been a________ increase in teacher's salary．

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Are we _________to arrive in the town before dark？

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His office was conveniently ________in the center of the town and we found it without any difficulty．

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He is a good man；if you need anything，you can ________on him to help．

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If a baby bird stays ________ for two or three weeks after leaving the nest, it has a fair chance of becoming an adult.

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When the engine would not start, the mechanic inspected all the parts to find what was at ________.

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My brother changed his major at college several times and he never ________ any one very long.

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If you go on telling lies like this, you won't be treated ________.

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It might be cold at sea, you'd better bring more clothes ________.

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Remember to give it back to me on time, ________ I can lend it to you.

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