– 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 many times____Chang’e I____the moon ? ---Only once.It ____there last year.
#40254
A
did..,go to / has gone
B
had… gone to/went
C
has… been to/went
D
has… gone to/has gone
---Jim, ________ read books while you are walking in the street. It’s very dangerous.---OK, thank you.
#39061
A
don’t
B
doesn’t
C
won’t
D
can’t
—Could you tell me if Li Lei____________ to my party, Linda?—Sorry, I am not sure. If he ___________, he’ll call you.
#36164
A
is coming, will come
B
will come, will come
C
is coming, comes
D
comes, will come
--- Where is your mother?--- She _______ to Sichuan on business. She has ______ there four times recently.
#41943
A
has gone, gone
B
has been, been
C
has gone, been
D
has been, gone