将下列句子变成感叹句1.She thought a very good idea!2.they look happy 3.she signs well
问题描述：
将下列句子变成感叹句
1.She thought a very good idea!
2.they look happy
3.she signs well
答
1.What a good idea she though!
2.How happy of they!
3.What signs she well!