问题描述：
Mr White is going to give us a report his( )tour around Austarlia.A.in B.on C.to D.of 理由,
Mr White is going to give us a report his( )tour around Austarlia.
A.in B.on C.to D.of
Mr White is going to give us a report his( )tour around Austarlia.
A.in B.on C.to D.of
问题解答：
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