The  book has been  translated into thirty languages since it        on the market in 1973.
#102971
A
had come
B
has come
C
came
D
comes
推荐题目
She couldn’t        her words        by the students even if she repeated them once again.. 
#101805
A
get…understanding
B
get…understood
C
get… to understand
D
make…understand
—How did she get infected?  —She ____ the viruses without any protection.
#101750
A
exposed to
B
had exposed to
C
was exposed to
D
has exposed to
---Can we sit at the table near the window?---I’m sorry, but it______ already.
#101085
A
was taken
B
has taken
C
has been taken
D
has been taking