The situation put us at a serious________，which made us very worried.

Praise is like sunlight to the human spirit； without _____we cannot flowerand grow

I wonder how he _______ that to the teacher.

You seem to be burning yourself out with thecoming exam!—–________. I’m dying for a thorough rest and a goodworkout.

下列划线词的词性和用法都与例句相同的一项是（ ）例句：项伯杀人，臣活之