Can you ________to us your help?

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Children are tired of learning often because they are________ to do better than they can, both at school and at home.

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Seawater ________ salt, so it is unfit to drink.

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I didn't know what to do when an idea________ to my mind.

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It was so noisy outside that he couldn't________ down to read.

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________you are happy, it doesn't matter what you do.

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There are several reasons why we decided against the plan. ________, it would not be practical.

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He said half of what he ________ advertising was wasted .

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A good advertisement should ________ the people's attention .

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You must ________ the computer before you buy it .

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