--Which of your parents is a doctor?

--________. They are ________ teachers.

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--Do you want the pencil?

--Yes, I want ________.

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He ran too fast for _______ to catch up with.

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The Olympic Games are held ________.

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_______ of us has a dictionary.

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After a game of table tennis, they are able to work _______ and _______ than before.

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The question is ________ difficult ________ answer.

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In England it is often ________ cold ________ go outside and play games.

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I don't know ________ to do next.

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