Living things are dying out quickly. Let’s ask ____ destroying them in the past years.
#73211
A
what part people have been playing
B
people have played in
C
what part people have played in
D
people have been playing what part
推荐题目
You can take any seat _____is free .   
#72956
A
where
B
which
C
that
D
in which
Do you know the man _______? 
#73787
A
whom I spoke
B
to who spoke
C
I spoke to
D
that I spoke