单项选择题

All of the people at the meeting are______.

A．mathematic teachers
B．mathematics teachers
C．mathematics teacher
D．mathematic's teachers
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单项选择题
When traveling in a foreign country, one should be careful to carry ______ at all times.
A．their passports
B．your passport
C．his passport
D．her passport
单项选择题
—How old are you—I'm______you are.
A．the same old as
B．as same age as
C．the same age as
D．as same old as
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