单项选择题
Questions 19 to 22 are based on the conversation you have just heard.
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A.Sharon.
B.Susan.
C.Sherry.
D.Ben.
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单项选择题
A.About one third.B.About two thirds.C.Less than half.D.More than half.
A.About one third.
B.About two thirds.
C.Less than half.
D.More than half.
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单项选择题
A.Six hours.B.Eighteen hours.C.Sixteen hours.D.Eight hours.
A.Six hours.
B.Eighteen hours.
C.Sixteen hours.
D.Eight hours.
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