单项选择题


A．on
B．in
C．at
D．from
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单项选择题
A．breakB．holidayC．intervalD．course
A．break
B．holiday
C．interval
D．course
单项选择题
A．ConsequentlyB．MoreoverC．UnexpectedlyD．However
A．Consequently
B．Moreover
C．Unexpectedly
D．However
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