Scientists say it may be five or six years _____ it is possible to test this medicine on human patients.

试卷相关题目

• 1It was some time ______ we realized the truth.

  A.when

  B.until

  C.since

  D.before

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• 2— Where's that report?— I brought it to you _____ you were in Mr. Black's office yesterday.

  A.if

  B.when

  C.because

  D.before

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• 3_____he has limited technical knowledge, the old worker has a lot of experience.

  A.Since

  B.Unless

  C.As

  D.Although

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• 4He made a mistake, but then he corrected the situation _____ it got worse.

  A.until

  B.when

  C.before

  D.as

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• 5We had to wait half an hour _____ we had already booked a table.

  A.since

  B.although

  C.until

  D.before

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• 6Put that money somewhere safe _____ it gets stolen.

  A.before

  B.after

  C.when

  D.while

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• 7Zhouqu County, Gansu Province is seeing improvements in life after the serious mudslides, _______ life is still far from normal.

  A.though

  B.because

  C.unless

  D.lest

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• 8_____ the Hope Project was carried out in this poor area, students here had no access to education.

  A.Once

  B.As

  C.Before

  D.After

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• 9In some places women are expected to earn money ____ men work at home and raise their children.

  A.but

  B.while

  C.because

  D.though

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• 10— Do you have a minute? I've got something to tell you. — Ok, _____ you make it short.

  A.now that

  B.if only

  C.so long as

  D.every time

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