单项选择题


A．looking for
B．looking into
C．looking after
D．looking over
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单项选择题
A．to payB．payingC．payD．to have paid
A．to pay
B．paying
C．pay
D．to have paid
单项选择题
A．whichB．thatC．whatD．when
A．which
B．that
C．what
D．when
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