0  299747  299755  299761  299765  299771  299773  299777  299783  299785  299791  299797  299801  299803  299807  299813  299815  299821  299825  299827  299831  299833  299837  299839  299841  299842  299843  299845  299846  299847  299849  299851  299855  299857  299861  299863  299867  299873  299875  299881  299885  299887  299891  299897  299903  299905  299911  299915  299917  299923  299927  299933  299941  447090 

15. It is difficult for us to learn a lesson in life ____we’ve actually had that lesson.

A. until         B. after         C. since         D. when

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14. The report about the ______ surprised all the ______.

  A. present situation; people present         B. present situation; present people

  C. situation present; people who present      D. situation present; presented people

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13. The man kept silent in the room unless _______.

  A. spoken         B. speaking          C. to speak          D. spoken to

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12. ______ writing the article, Mrs. Curie even forgot her dinner.

  A. Absorbed in     B. Absorbing at       C. Having absorbed by  D. To absorb in

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11. The man is being questioned in relation to the ______ murder last night.

A. advised         B. attended           C. attempted         D. admitted

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10. -----Can you tell us what is important to a businessman?

  -----________ information.

  A. Collect         B. Collected         C. Having collected     D. Collecting

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9.The professor referred to     yesterday.

  A. come        B. came         C. coming        D. comes

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8.  -----What about the protection?

   -----Let’s keep the surface ____ dirt by putting a cover over it.

  A. far from        B. free from         C. apart from       D. away from

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