单项选择题

What can you do to ensure that you will stay healthy

A．be assured
B．insist
C．prove
D．secure
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单项选择题
The town is famous for its magnificent church towers.
A．distinguished
B．contemporary
C．specialized
D．specified
单项选择题
Mary had sold her bike, taken a driving test and bought a car.
A．examination
B．quiz
C．exercise
D．cheek
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