用过去分词形式改写下列句子

用过去分词形式改写下列句子
1 the building fell down immediately after the terrorists attacked it.
2.the scientists stopped to have arest because he was tired out.
3.if we had given ore attention ,the trees could have grown better.
4.the disc,which wes digitally recorded in the studio ,sounded fantastic at the party last nihgt.
5.he is not easy to get along with ,but the friendship of his ,once it is gained,will last forever.