请根据要求改写下列句子，每空一词。
You’d better eat some bread now.(改为否定句)
You’d better _________ eat _________ bread now.
Elsa spends $30 buying books each month.(保持句意基本不变)
The _________ of Elsa’s books _________ $30 each month.
Kate will return to school in a week.(对划线部分提问)
_________　_________ will Kate return to school?
Leo and David are the same age.(保持句意基本不变)
Leo is as ________ _________ David.
I went to bed after I finished my homework.(保持句意基本不变)
I ________ go to bed _________ I finished my homework.