单项选择题

A．discussing
B．concerning
C．studying
D．researching
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单项选择题
A．To keep together in a racial group.B．Because they are discriminated against.C．For religious reasons.D．Because they don’t like other people.
A．To keep together in a racial group.
B．Because they are discriminated against.
C．For religious reasons.
D．Because they don’t like other people.
单项选择题
A．In a travel agency.B．At an airport.C．At a restaurant.D．At a hotel.
A．In a travel agency.
B．At an airport.
C．At a restaurant.
D．At a hotel.
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