Ⅰ.用适当的介、副词填空
1．I think my long and active life must be due ________ the healthy life I live.
2．This brings me ________ the real reason for my letter.
3．You see，during adolescence I also smoked and became addicted ________ cigarettes.
4．This means that after a while your body becomes accustomed ________ having nicotine in it.
5．I didn’t know，________ example，that it could do terrible damage ________ your heart and lungs or that it was more difficult ________ smoking couples to become pregnant.
6．When I was taken ________ the school football team because I was unfit，I knew it was time to quit smoking.
7．Decide ________ a day to quit.
8．If you start to feel nervous or stressed，do not reach ________ a cigarette.
