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. These _______ (士兵) often help others.

2. A _______ (喧闹的) environment is harmful to our health.

3. Tom was the _______ (五) runner past the finishing line.

4. Look! The Greens _______ (准备) ready for the journey.

5. My uncle _______ (下决心) to give up smoking last Tuesday.