If you ______ firm action to deal with it at once, you wouldn’t suffer heavy losses tomorrow.
#86970
A
take
B
took
C
has taken
D
had taken
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-Oh, it’s you, Steve! I ______ you.   -No surprising. I’ve just had my hair cut. 
#87982
A
don’t recognize
B
haven’t recognized
C
didn’t recognize
D
hadn’t recognized
We      last night, but we went to the party instead.
#87198
A
must have studied
B
might study
C
should have studied
D
would study
 We        the manager , but no one        the telephone number .
#87851
A
could have called ; knew
B
could have called ; had known
C
could call ; had known
D
could call ; knew