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
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The chairman requested that ___________. 
#89880
A
the members studied the problem more carefully
B
the problems were more carefully studied
C
the problems could be studied with more care
D
the members study the problem more carefully
—Is the letter from your mother?—Yes. But she ________ the letter herself, because she doesn't even know one word.
#86535
A
needn't have written
B
can't have written
C
might not have written
D
should not have written
       anyone call, tell them I’m in conference.
#86721
A
Should
B
Would
C
Could
D
Might