Remember, you must do ________ your teacher asks you to do.

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The bookstore stays ________ until 9 o'clock at night.

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The number of people who can afford to buy their own houses ________ more than 80%, but a number of houses ________.

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He is a good man ________ hot temper.

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Don't forget ________ to me. Let's keep in touch with each other.

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Must I take a bus?

No, you ________. You can walk from here.

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They were surprised that a child should work out the problem ________ they themselves couldn't.

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The number of people invited ________ fifty, but a number of them ________ absent for different reasons.

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They were quarreling. How ________ the quarrel ________?

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He likes ________, but he doesn't like ________ today, because it is too cold.

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