单项选择题

A．Because they’re too expensive.
B．Because they were the first kind of balloon ever used.
C．Because they move very slowly.
D．Because they’re rejected by the pilots.
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单项选择题
A．On campus. B．In New York City. C．InBoston. D．In Europe.
A．On campus.
B．In New York City.
C．InBoston.
D．In Europe.
单项选择题
A．She is going to miss her first class. B．She would like the man go to the dentist’s later in the day. C．The meeting with the doctor will be over before the man’s first class. D．The man might sleep late and miss his appointment.
A．She is going to miss her first class.
B．She would like the man go to the dentist’s later in the day.
C．The meeting with the doctor will be over before the man’s first class.
D．The man might sleep late and miss his appointment.
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