单项选择题

A．By prediction.
B．By recording.
C．Through observation.
D．Through interviewing.
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单项选择题
A．The boy’s hands are often dirty.B．Many people in this area travel by air.C．The boy shouldn’t shake hands with other people.D．Flu can spread through shaking hands with other people.
A．The boy’s hands are often dirty.
B．Many people in this area travel by air.
C．The boy shouldn’t shake hands with other people.
D．Flu can spread through shaking hands with other people.
单项选择题
A．He can come another time.B．There would be more fun without the roommate.C．It is no problem if the roommate refuses to come.D．Bring the roommate along and enjoy the good time.
A．He can come another time.
B．There would be more fun without the roommate.
C．It is no problem if the roommate refuses to come.
D．Bring the roommate along and enjoy the good time.
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