单项选择题

A．They are traveling.
B．They are having a walk.
C．They are saying goodbye to each other.
D．They are chatting.
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单项选择题
A．15.B．20.C．18.D．16.
A．15.
B．20.
C．18.
D．16.
单项选择题
A．Children’s Literature.B．American Literature.C．Medicine.D．Elementary Education.
A．Children’s Literature.
B．American Literature.
C．Medicine.
D．Elementary Education.
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