1 . 下列句子中各有一处语言错误，请把错误改正，其他部分不得改动。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在右边横线上写出该加的词。
删除：把多余的词用斜线（\）划掉，并在右边横线上写出该词，也用斜线划掉。
修改：在错误的词下划一横线，并在右边横线上写出改正后的词。
1. John asked me to help him carry the heavy box was lying under the desk.
2. The computer is an useful machine that can do many things for you.
3. Everyone has his own interest. One of my classmates enjoy singing Adele’s songs.
4. The house has changed hands three times since it has first built.
5. All the tickets had been sold out when they got to there.