All possible means ___ been tried to stop the air______.
#103381
A
has, polluted
B
have, polluting
C
have, being polluted
D
has, being polluted
推荐题目
Ann me her address but I’m afraid I it.
#104539
A
gave;have lost
B
has given;have lost
C
gives;lost
D
had given;lost
When the fans hurried to the airport, they found that the famous singer _____.
#103292
A
had left
B
has left
C
left
D
will leave
—Have you heard about the recent election?—Sure, it _______ the only thing on the news over the last three days.
#100108
A
would be
B
is
C
has been
D
had been
—What do you think of the book?—Oh,great.It’s a second time.
#103944
A
worth to read
B
worth of reading
C
worthy to be read
D
worthy of reading
Please tell Tom not to leave the classroom unless he ______ that all the lights ______.
#100303
A
makes sure; are turned off
B
makes sure; will be turned off
C
is made sure; are turned off
D
will make sure; will be turned off