单项选择题

A．They are twins.
B．They are classmates.
C．They are friends.
D．They are colleagues.
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单项选择题
A．the morningB．the afternoonC．the eveningD．the information is not given
A．the morning
B．the afternoon
C．the evening
D．the information is not given
单项选择题
A．AllB．MostC．NoD．Some
A．All
B．Most
C．No
D．Some
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