问题描述：
Sandy,why do you look so excited?--I'll go to London for the _________ time．I've been there onc
Sandy,why do you look so excited?
--I'll go to London for the _________ time．I've been there once．
A．first B．second C．two D．one
Sandy,why do you look so excited?
--I'll go to London for the _________ time．I've been there once．
A．first B．second C．two D．one
问题解答：
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