At first, people raised dogs to help them hunt and to warn them when danger ______ . Today, cats and dogs are kept largely as pets.

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• 1In the advanced course students must take performance tests at monthly______.

  A.gaps B. intervals C.length D. distance

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• 2If you ______me, I shall be very grateful to you .

  A)helped

  B)will help

  C)are helping

  D)will be helping

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• 3"Did they blame him for his mistakes?" "Yes,but they _____so."

  A)would rather not do

  B)shouldn't do

  C)shouldn't have done

  D)had better not do

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• 4______open the door for you?

  A)Would I

  B)May I

  C)Will I

  D)Shall I

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• 5Comrade Wang_______be in Beijing because I saw him in town only a few minutes ago.

  A)mustn't

  B)can't

  C)may not

  D)couldn't

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• 6_______I repeat the question?

  A)Will

  B)Shall

  C)Would you like that

  D)Do you want that

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• 7I________the operation unless it is absolutely nesessary.

  A)would rather not to have

  B)would rather not have

  C)would rather not had

  D)would rather that I not have

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• 8My father _______such a thing.

  A)cannot have said

  B)might not have said

  C)couldn't say

  D)must not have said

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• 9We see the lightning _____ it happens, but we hear the thunder later.

  A)the moment B)for the moment C)at the moment D)in a moment

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• 10We _____ that it will take another four months to finish this plan.

  A)grant B)estimate C)council D)check

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