根据下列句子的意思及所给的汉语提示，写出空缺处单词、固定短语或固定搭配的正确形式
题型：填空题
问题：
根据下列句子的意思及所给的汉语提示，写出空缺处单词、固定短语或固定搭配的正确形式。
1. Nancy didn't come to school because of her __________ (疾病).
2. If you are not careful enough, you can __________ (容易) make the same mistake.
3. I often hear her ___________ (说话) in low voices in class.
4. Don't be worried about it. These children can ___________ (照看) well here.
5. I study English by ___________ (写日记).