“Is Jack on duty today?”“It ____ be him. It’s his turn tomorrow.”
#88237
A
mustn’t
B
won’t
C
needn’t
D
can’t
推荐题目
If you were to do it,the result______different. 
#87724
A
will be
B
would be
C
should be
D
would have been
As it turned out to be a small house party, we _______ so formally.
#89126
A
needn’t dress up
B
didn’t have to dress up
C
might not have dressed up
D
needn’t have dressed up
If Helen             her credit card, she could have bought the dress.
#86908
A
brought
B
should bring
C
had brought
D
were to bring
—She joined a football team last fall and was recently made captain.  —Never _____ she'd ever have that much energy.
#89491
A
I had thought
B
I would have thought
C
could I have thought
D
will I have thought