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______ frightened us ______ a tiger turned up suddenly in front of us.  

A. What; was that: a/ L& O' @' K$ U2 ^ B.What; was; ^! e0 ?* d7 I9 Q' D O C.It; that was# R( i* [+ ?7 i7 D D.It was; that( D+ B9 ]! S& M, A; ^

答案A

解析