根据首字母或中文提示补全句子。
1.Don’t ask the lady’s age. It’s a s___________.
2.The girl lost her way. F______, the policeman helped her.
3.That’s why, e________ at 80, my grandfather looks still young.
4.Our English teacher is very kind. She always has a s__________ on her face.
5.Don’t eat too much ___________(油腻食物), It is bad for our health.
6.It takes me ____________(至少)two hours to get to my school.
7.We can do a lot of things to ____________________(保持健康).
8.It is very important for us to ___________________(保持良好的饮食习惯).
9.The children _________________(做大量的运动)in the school every morning.