单项选择题


A．ensures
B．provides
C．grants
D．contributes
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单项选择题
A．citizensB．graduatesC．teachersD．pupils
A．citizens
B．graduates
C．teachers
D．pupils
单项选择题
A．two-threesB．two-thirdC．two-thirdsD．two-three
A．two-threes
B．two-third
C．two-thirds
D．two-three
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