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

试卷相关题目

• 1We had to wait half an hour _____ we had already booked a table.

  A.since

  B.although

  C.until

  D.before

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• 2I didn't manage to work out the problem _____ the teacher had explained how.

  A.until

  B.unless

  C.when

  D.before

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• 3—Have you known each other for a long time? —Not very, ______ we started to study in this middle school.

  A.when

  B.since

  C.after

  D.before

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• 4If you are able to talk to a friend over the telephone, you feel that you are close _____ the actual distance is not shortened.

  A.so long as

  B.if

  C.even if

  D.as

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• 5You can't borrow books from the school library _____ you get your student card.

  A.before

  B.if

  C.while

  D.as

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• 6_____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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• 7— 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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• 8It was some time ______ we realized the truth.

  A.when

  B.until

  C.since

  D.before

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• 9Scientists say it may be five or six years _____ it is possible to test this medicine on human patients.

  A.since

  B.after

  C.before

  D.when

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• 10Put that money somewhere safe _____ it gets stolen.

  A.before

  B.after

  C.when

  D.while

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