单项选择题

A．18.
B．24.
C．22.
D．21.
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单项选择题
A．They are colleagues. B．They are friends. C．They are twins. D．They are classmates.
A．They are colleagues.
B．They are friends.
C．They are twins.
D．They are classmates.
单项选择题
A．She is a guide. B．She is a nurse. C．She is a teacher. D．She is a writer.
A．She is a guide.
B．She is a nurse.
C．She is a teacher.
D．She is a writer.
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