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
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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
单项选择题
Violent programs on television may have a bad ______ on children.
A．effort
B．control
C．influence
D．affect
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