– Look at these factories. I hate them. They____ many rivers here. --Yes. Something ______ to stop the pollution.
#39701
A
polluted, must do
B
had polluted , must be doing
C
have polluted , must be done
D
were polluting, must be done
推荐题目
Nobody         what his name is. 
#40648
A
know
B
knowing
C
knows
D
are knowing
His brother won’t go to play basketball until his work        .
#39863
A
is finished
B
finishes
C
will finish
D
finish
–Why are you in such a hurry, Mike? --There _____ an NBA basketball game in ten minutes.
#41631
A
will have
B
are going to have
C
is going to have
D
will be