Laughter, along with an active sense of humor, ______ protect you against a heart attack, according to a recent study.

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• 1Hurry up! The train ______. You know it ______ at 8:30 am.

  A.leaves; leaves

  B.is leaving; is leaving

  C.leaves; is leaving

  D.is leaving; leaves

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• 2— Hurry up! Alice and Sue are waiting for you at the school gate. — Oh! I thought they _____ without me.

  A.had gone

  B.are going

  C.have gone

  D.went

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• 3— Can you come to my birthday party tonight? — I'd love to, but I______ on a patient at 6 o'clock.

  A.will operate

  B.am operating

  C.will be operating

  D.will have operated

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• 4— Lucy is not coming tonight. — But she _____!

  A.promised

  B.will promise

  C.had promised

  D.promises

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• 5Through years of hard work, Mrs. Smith, who ______ as a secretary for five years, is general manager of the company now.

  A.serves

  B.served

  C.has served

  D.had served

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• 6----Are you a teacher? ----No, but I ______ in Harbin No. 3 High School for 3 years.

  A.had taught

  B.has taught

  C.teach

  D.taught

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• 7— Where is your mother? —She ________ the shop. She'll be back in an hour.

  A.has been to

  B.has gone to

  C.goes to

  D.go to

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• 8We haven't seen each other for many years since we ________ last time.

  A.separate

  B.separates

  C.separated

  D.separating

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• 9He ___________busy yesterday, or he __________you with your experiment.

  A.was; had helped

  B.was; would have helped

  C.had been; would have helped

  D.were; would have helped

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• 10The lady insisted that the young man _______her wallet and_______to the police station at once.

  A.had stolen; be sent

  B.should steal; sent

  C.has stolen; sending

  D.steal; had been sent

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