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单项选择题

A．The disadvantages of working in an office.
B．The waste produced in an office.
C．To save resources when working in an office.
D．How to save water in a restroom.
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单项选择题A．Because there are no signs to direct them.B．Because no tour guides are available.C．Because all the buildings in the city look alike.D．Because the university is everywhere in the city.

A．Because there are no signs to direct them.
B．Because no tour guides are available.
C．Because all the buildings in the city look alike.
D．Because the university is everywhere in the city.

单项选择题A．Places the man has visited.B．A paper the woman is writing for a class.C．School activities they enjoy.D．The woman’’s plans for the summer.

A．Places the man has visited.
B．A paper the woman is writing for a class.
C．School activities they enjoy.
D．The woman’’s plans for the summer.