—We all had a lot of fun at the barbecue yesterday. Pity you weren't there.—I really should have gone with you but I________on some remaining problems.
#99179
A
worked
B
was working
C
would work
D
would have worked
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--- So what is the procedure? --- All the applicants ______ before a final decision is made by the authority. 
#100351
A
interviewed
B
are interviewing
C
are interviewed
D
are being interviewed
—Don’t forget to visit me when you come to    Beijing. —______.
#101055
A
I don’t
B
I won’t
C
I can’t
D
I haven’t
Yesterday if the policeman _______earlier, the fight between the two boys would have been prevented. 
#103625
A
would have arrived
B
had arrived
C
were to arrive
D
arrived