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．Computer classes.B．Training sessions.C．Laser printing.D．Package borrowing.
A．Computer classes.
B．Training sessions.
C．Laser printing.
D．Package borrowing.
单项选择题
A．Susan is a fast worker.B．Susan did Jack’’s homework.C．Susan didn’’t to the homework on her own.D．Susan has not finished her homework.
A．Susan is a fast worker.
B．Susan did Jack’’s homework.
C．Susan didn’’t to the homework on her own.
D．Susan has not finished her homework.
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