改写下面的句子,但不能改变句子的意思.
问题描述：
改写下面的句子,但不能改变句子的意思.
例:I'm tall.( I'm not short)
1.I'm fat.( )
2.We were young then.()
3.He was tall then.()
4.My hair is long.( )
5.My grandparents are old()
答
1.I'm not thin.
2.We're not old then.
3.He wasn't short then.
4.My hair isn't short.
5.My grandparents aren't young.