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. The question is if they will support the plan.
2. Tom was disappointed that all the guests left when he arrived at the party.
3. I am delight to have been invited to your school.
4. He dreamt that the Olympics would make it possible for people of all countries to live side by side in the peace.
5. Working out regularly is good for you health.

3 . We were all ________ (delight) to receive your letter. （所给词的适当形式填空）

5 . He saw _______________ who had turned out to welcome him.
他看到成百的兴高采烈的学生出来迎接他。