Mark ______ have hurried. After driving at top speed, he arrived half an hour early.
#87664
A
needn’t
B
wouldn’t
C
mustn’t
D
couldn’t
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The new CEO asked that all inter-office communications ______ in writing rather than in person, ______ possible.
#87220
A
have been made; whoever
B
would be made; whichever
C
be made; whenever
D
were made; whatever
It was very kind of you to do the washing up, but you _______ it.
#89688
A
mustn't have done
B
wouldn't have done
C
mightn't have done
D
didn't have to do 
There were already five people in the car but they managed to take me as well . It ____ a comfortable journey . 
#89751
A
can''t e
B
shouldn''t be
C
mustn''t have been
D
couldn''t have been
—You___________ stop me.—Even if you __________it, I won't allow you to swim across the river.
#90001
A
mustn't; dare not do
B
may ; dare not do
C
can; dare to do
D
needn't; dare do