Since 1949, the people's living standard ____, causing a big ____ in population.

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• 1A big step _____ to strengthen China's health care systems since we launched an effort in 2008.

  A.has been taken

  B.is being taken

  C.was taken

  D.had been taken

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• 2With the strong economy and unemployment down, beautiful housing ________ to meet demand.

  A.has build

  B.is being built

  C.is building

  D.was built

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• 3----Where can we get your latest children's story? ----Soon. It _______ and will come out next week.   

  A.has printed

  B.is being printed

  C.has been printed

  D.has been printing

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• 4—Hey! Here is a message on my cell phone, telling me to send money to....—Delete it! It's a trick. Many a person ____ by such tricks.

  A.has been cheated

  B.have been cheated

  C.were cheated

  D.was cheated

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• 5— How long _____ at this job?— Since 1990.

  A.were you employed

  B.have you been employed

  C.had you been employed

  D.will you be employed

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• 6— Hi, Torry, can I use your computer for a while this afternoon?  — Sorry. ______.   

  A.It's repaired

  B.It has been repaired

  C.It's being repaired

  D.It had been repaired

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• 7— Did you finish your homework yet?— Yeah. We turned it in, and now it ____.

  A.is grading

  B.is graded

  C.is being graded

  D.has graded

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• 8— Will you attend the meeting this afternoon?— But I ________ anything about that.

  A.hadn't been told

  B.haven't been told

  C.didn't tell

  D.won't tell

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• 9— The window is dirty.—  I know. It _____ for weeks.

  A.hasn't cleaned

  B.didn't clean

  C.wasn't cleaned

  D.hasn't been cleaned

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• 10When you get the paper back, pay special attention to what  ______.

  A.have marked

  B.have been marked

  C.had marked

  D.had been marked

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