摘要： [2010·河南开封三模]I'd like to have visited the Palace Museum last week, but something unexpected to my father. A. had happened B. happened C. has happened D. happens 34B考查动词的时态.句意:上周我本想去参观故宫.可是我父亲发生了意想不到的事情.因在上周发生.故用一般过去时.

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