.What some teenagers don’t realize is ____ difficult life can be if they get addicted to drugs. 
#4789
A
how
B
what
C
that
D
why
推荐题目
He is afraid to face the problems he’ll have     the exam.
#4581
A
to pass
B
passed
C
passing
D
been passing
She _______ in Zhuzhou for ten years.
#4547
A
will work
B
work
C
was working
D
has worked
The exciting news he had been looking forward ___ at last, so he did nothing but____.
#5031
A
to came; cry
B
to coming; cry
C
to come; to cry
D
of come; to cry