单项选择题


A．by
B．without
C．during
D．when
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单项选择题
A．themB．youC．usD．him
A．them
B．you
C．us
D．him
单项选择题
I heard Harry ______ Good-bye to his teacher as I passed by.
A．to say
B．said
C．say
D．saying
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