—There's someone knocking on the door．Who it be?—It must be Mary．She promised to be here at 8：00．
#62257
A
must
B
can
C
shall
D
need
推荐题目
—Must I return the hook tomorrow morning? —No, you _ .You can keep it longer.
#77732
A
mustn't
B
can't
C
needn't
D
couldn't
—_____ you please play tennis with me? —Sorry, I _____.
#74769
A
Could; can’t
B
Could; couldn’t
C
Can; don’t
D
Can; couldn’t
The public transportation is very convenient in that big city, so there ________ be any difficulty in traveling around.
#62406
A
mustn't
B
wouldn't
C
shouldn't
D
needn't
—— We expected you yesterday.—— I'm sorry, I______you to say that I couldn't be here until today.
#63196
A
should have called
B
must have called
C
could call
D
would call