He has read many books on science, so it"s easy for him _____ these questions.[

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He has read many books on science, so it"s easy for him _____ these questions.[ ]

A. answers
B. to answer
C. answering
D. answer

答案

举一反三

It"s best _______ Australia in summer.[ ]
A. visiting
B. to visit
C. visit
D. visited

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—Shopping with me?
— Sorry. I have a lot of clothes _____.      [     ]
A. to wash
B. washed
C. wash
D. to be washed

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This big bag is too heavy for the little boy ______.Who volunteers to help him?[     ]
A. carries
B. carrying
C. carried
D. to carry

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The 2010 World Expo site (世博会现场) will be a good place_______.   [     ]
A. visiting
B. to visit
C. visited
D. to visiting

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Huaxing Clothes Street is a good place _____.[     ]
A. hang out
B. hung out
C. hanging out
D. to hang out

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