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单项选择题

He tried several times to pass the exam. _____ the end, he succeeded.

A．On
B．In
C．At
D．By
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热门试题

单项选择题His new novel is said ______ into a film last year.

A．to make
B．to have made
C．to be made
D．to have been made

单项选择题Where do polar bears usually hunt seals（）

A．On land
B．In open water.
C．In openings in the sea ice.
D．At the bottom of the sea.