______ to smoking for a considerably long time, he has much difficulty quitting it.
A. Having been addicted B. Being addicted
C. To have been addicted D. Having addicted
Was it through Mary, ______ was working at a high school, ______ you got to know Tom?
A. who; who B. that; which
C. who; that D. who; which
The father, ready to retire at an early age, hoped that his eldest son would ______ the family business.
A. take over B. look into
C. take up D. look through
My sister-in-law is the ______ of the information, so it cant be false.
A. resource B. source
C. birthplace D. data
--I believe that more effective measures have to be taken before we can breathe cleaner air.
--______. Air pollution has become too serious a problem.
A. I don’t like it
B. I am with you on that
C. I dont care about it
D. I cant agree with you
最近，我们学校新校规规定禁止学生在校园内使用手机，这引起了家长和同学们的热烈讨论。有人支持这个校规，认为使用手机会使学生分心，过度使用手机还会影响学生的健康。也有人反对这个校规，他们认为手机不仅便于家长和学生联系，而且还有其他的功能。
请写一篇短文反映出这些信息，并阐明自己的观点或态度。可适当增加内容使全文通顺流畅，字数120左右。（开头已经给出，不计入词数。）
Recently, our school has drawn up a new rule that mobiles shall not be used at school, which provokes a heated discussion.
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