单项选择题

A．She is serving her guests.
B．She is singing songs.
C．She is working hard.
D．She is looking at the city.
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单项选择题
A．New traffic rules.B．Traffic jams on highways.C．Air traffic conditions.D．Road conditions.
A．New traffic rules.
B．Traffic jams on highways.
C．Air traffic conditions.
D．Road conditions.
单项选择题
A．Drop off a paper.B．Go to a meeting.C．Find out about a course.D．See an advertiser.
A．Drop off a paper.
B．Go to a meeting.
C．Find out about a course.
D．See an advertiser.
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