单项选择题

A．Pedestrians passed by.
B．Cars were moving slowly in the street.
C．Policemen patrolled the street.
D．Garbage cans were kept from the street.
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单项选择题
A．The fierce competition in the market. B．The great pressure of work. C．The reform of education system. D．The big numbers of retired people.
A．The fierce competition in the market.
B．The great pressure of work.
C．The reform of education system.
D．The big numbers of retired people.
单项选择题
A．Because she has to finish her economics project. B．Because the dining hall closes early. C．Because she has another appointment. D．Because she needs to go back to the computer center.
A．Because she has to finish her economics project.
B．Because the dining hall closes early.
C．Because she has another appointment.
D．Because she needs to go back to the computer center.
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