Samuel Smiles, a British writer, said that practical wisdom is only _______ the school of experience.

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Nowadays TV programs are much more colorful than _______, with the help of the Internet.

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I’d rather have a room of my own, however small it is, than _______ a room with others.

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I must thank my parents _______ to be a college student.

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Find some part-time job during the vocation, and you will have _______ better understanding of _______ life.

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--Do you have anything more _______, sir?

--No. You can have a rest or do something else.

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Where was it _______ the forest fire broke out?

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To test which foods are better for a long space journey, they had as many as 50 dishes _______ in Shenzhou Ⅵ.

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How happy we were when the great moment we had _______ in the end!

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All the people in the world are looking forward to _______ a better society _______ with nature.

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