A number of houses were ________ in the fire.

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In the front of the lecture hall ________ a professor.

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You can never imagine what great difficulty I have ________ your house.

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－Is your home village ________ it used to be?

－No, it has changed greatly.

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The lady, ________ her purse in the street, didn't have any choice but ________ the police for help.

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Mr. Smith, who has been working at this school for twenty years, ________ headmaster last week.

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To fetch water before breakfast seemed to be a rule ________.

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－You should have thanked her before you left.

－I meant ________, but when I was leaving, I couldn't find her anywhere.

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He let me repeat his instructions ________ sure that I understood what was after he went away.

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I've got a terrible headache. I tried ________ some medicine, but it didn't help.

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