– 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
——How often do I need to feed the dog?——It___food everyday, or it will be hungry.
#39158
A
must give
B
must be give
C
must be given
D
must be gave
- Could you tell me_______？- Every four years.
#39711
A
how often the Olympic Games take place
B
when the Olympic Games are held
C
how often are the Olympic Games held
D
how often the Olympic Games were held
I’m not sure if he ______ in this exam. But if he ______ harder, he will do better.
#37949
A
succeeds; works
B
will succeed; will work
C
will succeed; works
D
succeeds; will work