—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
#88027
A
can; must
B
can; may
C
must; can
D
may; must
推荐题目
Had Wang Ling received six more votes in the election of out class,she _____our monitor now.
#87953
A
must have been
B
would have been
C
were
D
would be
They demanded that the books ______ to the school library right away.
#87511
A
should return
B
be returned
C
were returned
D
returned
—I can’t find my purse anywhere.—You __ have lost it while shopping.
#90477
A
may
B
can
C
should
D
would
If I had tried my best last term, I ________more progress then.
#89057
A
could make
B
would make
C
must have made
D
could have made
Helen _______ it if she doesn’t want to.
#87742
A
doesn’t need do
B
need not to do
C
needs not to do
D
need not do