After you have finished reading a book or a magazine in the reading-room, put it back ________ it used to be.

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----Shall I tell John about it?

----No, you ________. I've told him already.

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从A、B、C、D四个选项中，选出可以填入空白处的最佳选项.

The earth, the moon, the other starts, and the sun are just part of ________ we call the universe.

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________ leaves the room last ought to turn off the light.

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The book ________ all the information that you need．

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The little girl ________ on the ground ________ that she had ________ all the toys where they were.

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----I usually go to school on foot.

----Why not ________ there by bike for a change?

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The picture I ________ I ________ is under my dictionary, right under my nose.

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We won't start out ________ he comes.

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It's too cold outside. The engine of the car doesn't ________.

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