根据括号中所给的汉语写单词，使句子完整
He broke his bowl because of his _________________(粗心).
My classmate often works hard and the teacher gives him some__________(表扬).
Either his father or his mother __________(承诺) to buy him a computer if he gets good mark.
It’s believed that our moods are sometimes ____________________(影响) by colours. Many scientists are doing some research on this subject.
He learned this lesson the hard way — from his own _____________(个人)experience.