When Marx was in London, he  __   read at the library for hours.
#63038
A
would
B
might
C
could
D
should
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His failure suggested that he   the teacher’s suggestions.
#62975
A
can’t have followed
B
needn’t follow
C
mustn’t have followed
D
shouldn’t follow
—Can we leave the classroom now?—No, you _________. You _________ to leave until the bell rings.
#74081
A
don’t have to; are supposed
B
mustn’t; are allowed
C
needn’t; aren’t allowed
D
can’t; aren’t supposed
---      your brother swim, John?---No, he       .
#75887
A
Is; isn’t
B
Can; can
C
Can; can’t
D
are, can’t