On rainy days, accidents ______ happen sometimes on steep roads．
#63545
A
should
B
shall
C
must
D
can
推荐题目
According to our school rules, students ________ not carry mobile phones when taking a exam.
#62612
A
will
B
may
C
shall
D
need
--- Will the new iphone cost a lot?--- I ________ think so. Apple’s products are usually expensive.
#76043
A
shouldn’t
B
needn’t
C
would
D
must
—Dad, must I do my homework now?—No. You_____play games with your friends for a little while.
#78172
A
would
B
needn’t
C
may
D
don’t have to
Teenagers _______ allowed to drive in the street．
#74366
A
should not be
B
should be not
C
not should be
D
shouldn’t