根据句意和首字母提示完成单词1.The teachers have lots of a_____ about study

根据句意和首字母提示完成单词
1.The teachers have lots of a_____ about study to give us.
2.Li Ming didn't come to school,for he had a high f____.
3.We must try our best to k_____ the balance of nature.
4.Speaking more can i____ your oral English.
5.Dumpling is a Chinese t____ food in Spring Festival.