Bats are surprisingly longlived creatures, some ________ a life span of around 2

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Bats are surprisingly longlived creatures, some ________ a life span of around 20 years. [    ]
A. having
B. had
C. have
D. to have

答案

举一反三

Recently a survey ________ prices of the same goods in two different supermarkets has caused heated
debate among citizens.[     ]
A. compared
B. comparing
C. compares
D. being compared

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Do you wake up every morning ________ energetic and ready to start a new day?[     ]
A. feel
B. to feel
C. feeling
D. felt

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_______ around the fire, the tourists danced with the local people.[      ]
A. Gather
B. To gather
C. Gathering
D. To be gathering

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At one point I made up my mind to talk to Uncle Sam. Then I changed my mind, ________ that he
could do nothing to help. [     ]
A. to realize
B. realized
C. realizing
D. being realized

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It rained heavily in the south, ________ serious flooding in several provinces.[    ]
A. caused
B. having caused
C. causing
D. to cause

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