单项选择题

A leap year(闰年) ______ once every four years.

A．occurred
B．occurreds
C．is occurred
D．was occurred
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单项选择题
When Mr. Jones gets old, he will ______ over his business to his son.
A．take
B．think
C．hand
D．get
单项选择题
The school was named ______ the hero who gave his life for the cause of the people.
A．after
B．by
C．with
D．from
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