_____should not become a serious disadvantage in life and work.（2010)A．To be not tallB．Not

In the past few years, traffic problems （become) ________ more and more serious.

It will become easy to cure some serious diseases because__________.

______ is not a serious disadvantage in life.[2001]A．To be not tallB．Not to be tallC．Being

Such problems______air pollution and traffic jams are becoming more and more serious in so

You should not______going to the doctor because your illness might be serious.A．take upB．p

____ a serious crime what exactly should you do？