单项选择题

Conversation 1

A．About every four minutes.
B．About every five minutes,
C．About every six minutes.
D．About every seven minutes.
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单项选择题
A．Flowers.B．A book.C．A blouse.D．A bik
A．Flowers.
B．A book.
C．A blouse.
D．A bik
单项选择题
A．One.B．Two.C．Three.D．Four.
A．One.
B．Two.
C．Three.
D．Four.
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