It’s said that ______of the water around the world___ polluted. 
#44439
A
two third , has
B
two thirds, have
C
two third, are
D
two thirds, is
推荐题目
People should __________ from __________ down the trees to protect the earth.
#44463
A
be stopped, to cut
B
stop, to cut
C
be stopped, cutting
D
stop, cutting
A photo _____ each time that button _____.
#44456
A
has taken… has pushed
B
has been taken…has pushed
C
is taken … will be pushed
D
is taken … is pushed.
Our classroom _____ every day, so it’s very clean.
#44863
A
cleans
B
is cleaning
C
is cleaned
D
cleaned
Here are the photos of my favourite football players       in Beijing.
#44918
A
who were taken
B
that took
C
which I was taken
D
that were taken
We ______ to close the windows before we left the lab.
#45022
A
tell
B
told
C
are told
D
were told