America is one of the _________countries that own nuclear weapons.

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The cottage will be cold. Make sure ________the heater.

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She can't help ______ the house because she's busy preparing for the exam.

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I suggested that he _________his homework first.

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It's strange that the boy doesn't have anything ________ his father.

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The old lady ______ the tailor's number in the phone book to make sure that she had not got it wrong.

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--What should I do with this passage?

--_____ the main idea of each paragraph.

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According to the plan, the bridge ______ will be completed next January and open to the public.

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_____, I'd like to say how much I've enjoyed staying here.

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____in 1636, Cambridge is one of the most famous universities in Britain.

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