There serious air pollution if people use more and more cars.
#36558
A
has
B
will be
C
will have
D
are going to be
推荐题目
Her uncle _________ to the factory .He will be back __________ an hour .
#41856
A
has gone, after
B
has been, in
C
has gone, in
D
has been, after
--- Sorry, I’m late.--- It doesn’t matter. The meeting _____ just for several minutes.
#40365
A
has begun
B
has started
C
has been on
D
started
– 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