He﹍﹍the job well, but he    so careless.
#87662
A
had done; had been
B
could do; was
C
could have done; was
D
hadn’t done; had been
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The whole building _____ burned down, but the heavy rain _____.
#90075
A
might have; would help
B
could have been; helped
C
must have; helped
D
should have been; was helping
You _____ an A on your composition, but there were some spelling mistakes.
#87445
A
should receive
B
could have received
C
would receive
D
must have received