If I don't learn ________ to swim, it will be dangerous.

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She is too young. Don't leave ________ at home by ________.

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We usually have ________ classes on Sunday.

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The third cake is ________ of all, but it's too dear.

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He asked me ________ to the park.

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Don't leave gym ________ the day.

[　　]

If he eats too ________ food, he will feel ill.

[　　]

Don't look ________ the window in class.

[　　]

________ classroom is full of desks, chairs and books.

[　　]

They are famous ________ a short time.

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