单项选择题

A．They are friends
B．They are strangers
C．They are brother and sister.
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单项选择题
A．Yes, he did.B．No, he didn’t.C．We are not sure.
A．Yes, he did.
B．No, he didn’t.
C．We are not sure.
单项选择题
A．8:00 a.m.B．8:30 a.m.C．3:00 p.m.
A．8:00 a.m.
B．8:30 a.m.
C．3:00 p.m.
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