You know he is not going to let us leave early if we ___ get the work done.
#90242
A
can't
B
may not
C
shouldn't
D
mustn't
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The boy         the first prize, but he was so careless as to make a foolish mistake.
#87720
A
must have gained
B
need have gained
C
could have gained
D
shall have gained
Our teacher demanded that all of us ______ English every day.
#86729
A
should practise to speak
B
would practise speaking
C
could practise speaking
D
practise speaking