仔细阅读下列句子，每句中均有一个错误，请找出并在横线上改正，请按下列情况改正：
该句多一个词：把多余的词用斜线（ \ ）划掉，在该行右边横线上写出该词，并也用斜线划掉。
该句缺一个词：在缺词处加一个符号（∧），在该行右边横线上写出该加的词。
该句错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
The flowers in the field smell sweetly
What will happen if you don’t have balanced diet.
He is so a great man that we all show our respect to him.
He suggests that we would hold a class-meeting tonight .
His grandpa died three years before.