单项选择题

A．Doctor and patient.
B．Receptionist and client.
C．Teacher and student.
D．Partners.
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单项选择题
A．Her son.B．Her brother. .C．Her father.D．Her nephew.
A．Her son.
B．Her brother. .
C．Her father.
D．Her nephew.
单项选择题
This passage is written for teachers or instructors for children.
A．Y
B．N
C．NG
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