—I hear you've got a set of valuable Australian coins. ________ I have a look?

—Yes, certainly.

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It has been announced that candidates ________ remain in their seats until all the papers have been collected.

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—Will you stay for lunch?

—Sorry, ________ . My brother is coming to see me.

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My English-Chinese dictionary has disappeared. Who ________ have taken it?

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—The room is so dirty. ________ we clean it?

—Of course.

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How ________ you say that you really understand the whole story if you have covered only part of the article?

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—Shall I tell John about it.

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

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I should have been, there, but I ________ not find the time.

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A left-luggage office is a place where bags ________ be left for a short time, especially at a railway station.

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—Mum, I've been studying English since 8 o'clock. ________ I go out and play with Tom for a while ?

—No, I'm afraid not. Besides, it's raining outside now.

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