Ⅱ.单项选择(满分20分)21. Nowadays many young people get into ____ habit of smoking in ____ public and can't kick it.
I don’t know _____makes her afraid of having her business discussed.
15. It was with great joy _____ he received the news ______ his lost daughter had been found.
It was _____back home after the experiments.
It was just in the room _____ he was born _____ he died.
12. It is the ability to do the job ______ matters not where you come from or what you are.