改写句子,不变句意 简单的英文题

改写句子,不变句意 简单的英文题
He ran as fast as he could.
He ran as ___ as ___ .
I spend less money on books than my sister.
I do not spend as ___ ___ on books as my sister.
He is not so stupid as I thought he was.
He is ____ than I thought he was.
注意：只有一个空