【推荐1】These teenagers are going to learn computer science for personal _________（improve）.

【推荐2】People all expect to see further ________ (improve) over the coming year.

【推荐3】The composition you wrote is quite good, but there is still room for ________ in your work. (improve)

【推荐1】The car is broken, and we need some t_________ (工具) to fix it.

【推荐3】根据语境及所给首字母提示补全所缺单词。
1. Mr. Hunt's wife gave b________ to a baby boy last night.
2. Be careful with this bad tooth. It can c________ much pain.
3. Planes fly over the building all day, making a lot of n________.
4. —It's dangerous to drive after drinking.
—That's true. It can i________ the risk of traffic accidents.
5. The weather r________ says that it'll rain tomorrow.