根据句意或首字母填入所缺单词。
1. A good day b______ with a good breakfast.
2. -----What's the matter______ you?
----I'm not feeling well. I'm ______ .
3. He had to take ______ of his mother because she was______ in bed.
4. lf you want to keep ______, you must have a strong b_______.
5. They arc very athletic, so they have strong b ______