单项选择题

A．it’s hardly believed that Black passed the exam.
B．Both Bill and Black passed the exam.
C．What Bill did was a great help for Black to pass the exam.
D．Black tried hard to help Bill pass the exam.
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单项选择题
A．Beautiful scenery in the countryside.B．Dangers of cross-country skiing.C．Pain and pleasure in sports.D．A sport he participates in.
A．Beautiful scenery in the countryside.
B．Dangers of cross-country skiing.
C．Pain and pleasure in sports.
D．A sport he participates in.
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