单项选择题

Over the last fifteen years, running has become a popular ______ for 30 million participants of all ages.

A．fantasy
B．pastime
C．symposium
D．penalty
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单项选择题
As a teenager, Mary sent newspapers in the morning, worked in a restaurant in the afternoon, and ______ in the evening.
A．typing for her mother
B．had typed for her mother
C．typed for her mother
D．to type for her mother
单项选择题
He believed that the greatest of his ______ was that he had never had a college education.
A．griefs
B．misfortunes
C．disasters
D．sorrows
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