单项选择题

A．They are tour guides.
B．They are salespersons.
C．They are tourists.
D．They are engineers.
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单项选择题
A．Workers.B．Students.C．Engineers.D．Businessmen.
A．Workers.
B．Students.
C．Engineers.
D．Businessmen.
单项选择题
A．He is late because there was a traffic jam.B．He was caught by a traffic policeman.C．He had a car accident.D．He caused a car accident.
A．He is late because there was a traffic jam.
B．He was caught by a traffic policeman.
C．He had a car accident.
D．He caused a car accident.
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