I don’t think ________ easy to learn a foreign language well in two years.

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Very few scientists  ________ with completely new answers to the word’s problems.

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Don’t ________ the boy to study late at night because it is not good for his health.

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Will you please ________ again?

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A．repeat the long sentence

B．explain me the long sentence

C．explain to me the long sentence

D．explain the long sentence to me

Ask me for help ________ difficulties.

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No matte ________ hard it may be, I’ll carry it out.

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We ________ in touch with each other for at least five years .

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If you ________ the school rules, you’ll be pumiced．

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Can you think ________ the things and persons ________ you worked with?

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If you ________ your money to mine, we’ll have enough to buy a car.

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