单项选择题

A．easy
B．easier
C．difficult
D．difficulty
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单项选择题
A．discoverB．look forC．uncoverD．search for
A．discover
B．look for
C．uncover
D．search for
单项选择题
How long will the trip take
A．7 hours.
B．Half a day.
C．The whole day.
D．All weekend.
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