---who______it be that is knocking at the door? ---It_______be Father, but I’m not sure.
#62245
A
can, must
B
can, may
C
must, can
D
may, must
推荐题目
--- Will Helen come to my party tonight?--- I am not sure. She _______ go to the cinema with her father.
#63478
A
shall
B
can
C
must
D
may
It was very kind of you to do the washing-up but you _____ it
#62541
A
needn’t do
B
shouldn’t do
C
mustn’t have done
D
needn’t have done
Whenever my grandmother calls just to chat with me，I drop everything and enjoy the moment，knowing these times__________pass．
#62578
A
call
B
must
C
shall
D
might
These broken pieces of plates don’t fit together, they ___________ parts of different ones.
#76107
A
can’t be
B
can be
C
mustn’t be
D
must be