On rainy days, accidents ______ happen sometimes on steep roads．
#63545
A
should
B
shall
C
must
D
can
推荐题目
The boss said to the secretary “If you work well, you ______ have a rise.”
#63662
A
must
B
ought
C
would
D
shall
—Everyone in my class passed the exam.—Oh, really? It ________ difficult.
#62802
A
can’t have been
B
needn’t have been
C
must be
D
mightn’t be
Keep up a good state of mind even if you ______ fail plenty of times.
#62211
A
should
B
will
C
must
D
need
-Listen! Is Mary playing the piano in the room? --No. It ________ be Mary. She has gone to Hong Kong.
#77454
A
may not
B
needn’t
C
can’t
D
mustn’t