— Look! Somebody _____the sofa.— Well, it wasn't me. I didn't do it.
#100461
A
is cleaning
B
was cleaning
C
has cleaned
D
had cleaned
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--May I remind you that Mr. White is waiting outside, Mrs. Green? ---Oh, I _________ all about it.
#103796
A
forget
B
had forgotten
C
forgot
D
was forgetting
To our delight, up till now, the European Union, Japan, and Russia ________ their targets for CO2 emissions (排放).
#103852
A
give
B
have given
C
give
D
gave
--- Marry is in hospital. --- Oh, really? I _______ know. I _________ go and see her.
#102779
A
didn’t; am going to
B
don’t; would
C
don’t; will
D
didn’t; will
-Why does the Lake smell terrible?-Because large quantities of water__________.
#104945
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
—Nice to see you again after all these years. What _____?—Well, I’ve tried many things since we left school. I’m now working for a large oil company.
#101650
A
have you done
B
were you doing
C
did you do
D
have you been doing