He's been learning English ________ five years.

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My brother is interested in ________ basketball.

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--I have three English dictionaries.

--I have nine. I have three times ________ you.

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--Must we finish our homework now, Mrs. Read?

--Oh, no, you________.

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--When did Mr Green come here?

--________ nine o'clock yesterday morning.

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I will never forget the day ________ I met my first teacher.

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The question is so easy ________ even a child car answer it.

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My mother and I are ________ in the way of speaking.

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Please study hard. ________ you will fail the final exam.

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There ________ no water and no air on the moon.

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