完成句子。

1. He often ______ ______(受头痛的困扰)headache these days.

2. The leader promised to keep us ______ _______ (知晓) fresh development.

3. This will ______ ______ ______ ______ ______(产生持久的影响)the number of fish left for us to eat.

4. I was shocked to find a piece of paper on my desk ______ _____,(写着)'Stupid Sarah got a D'.

5. Remember the day when we _____ _____ ______ _____(让你负责).

锅炉湿保养的方法的种类。