—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
(2013·吉林四校高三一诊)I really don't know how to thank you, but for your help, I ________ my lost necklace.
#86587
A
couldn't have found
B
mustn't have found
C
couldn't find
D
wouldn't find
－Mom’s gift? She _______ have chosen a better one for me.－She must be very happy to know it.
#87941
A
should
B
might
C
couldn’t
D
mustn’t
Kate didn’t come yesterday, or you ________ her.
#87816
A
would see
B
were to see
C
had seen
D
might have seen
——Alice looks sad. Did you tell her about the accident? ——Yes, but I ______ her just before her final examinations.
#88164
A
should have told
B
shouldn’t have told
C
needn’t have told
D
must have told
—You didn’t invite Mary to the ball?—____ her, too?
#89489
A
Must I invite
B
Should I have invited
C
Must I have invited
D
Should I invite