根据首字母及汉语提示, 完成下列单词的拼写, 使句意明确, 语言通顺。
（1）、He only r (回应) with a smile when I said hello to him.
（2）、Chinese President Xi Jinping gave a wonderful s (演讲) at the UN meetings last month.
（3）、Teachers always t (对待) their students like their own children.
（4）、To my s (羞愧), I didn't follow my teachers' advice while studying in schools.
（5）、The next room was e (空的) for long and the old man began to live there last week.
