完成句子（共6小题，每小题1分，共6分）
根据括号内的提示，填出单词的正确形式。
He was so __________(饥饿的) that he ate all the food in the bowl.
The things in this shop are __________(昂贵的)。
She kept many _______(日记) last year.
My mother says junk food is bad for my ________(健康)。
The ________(差异)between these two books are clear.
Gina ______(锻炼)every day.