Dr. Smith quitted__________to have dinner. [ ]A. researching

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Dr. Smith quitted__________to have dinner.    [     ]
A. researching
B. researched
C. to research
D. to researched

答案

举一反三

_________terrible , the dog was driven out of the room. [ ]

A. Smelt
B. Smelling
C. Having been smelt
D. Being smelt

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The glass doors have taken the place of the wooden ones at the entrance,_________in the natural light during the day. [ ]

A. to let
B. letting
C. let
D. having let

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_________me more time,you will be able to get a better result. [ ]
A. To give
B. Giving
C. Having given
D. Given

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________their hats into the air, the fans of the winning team let out loud shouts of victory.[ ]
A. To throw
B. Thrown
C. Throwing
D. Being thrown

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Oil prices have risen by 32 percent since the start of the year, __________a record US$ 57. 65 a
barrel on April 4.[ ]
A. have reached
B. reaching
C. to reach
D. to be reaching

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