The first snow of every year is always so exciting, but too much snow _________ cause trouble
#62567
A
shall
B
need
C
can
D
must
推荐题目
—Must we clean the classroom now?—No ,you _______.
#76832
A
must
B
needn’t
C
aren’t
D
mustn’t
—Must we finish our homework today? —No, you     . You     finish it the day after tomorrow.
#74977
A
needn’t; must
B
mustn’t; can
C
needn’t; can
D
mustn’t; can
Not having work out the problem,          leave the office.
#63683
A
so he was not allowed to
B
and he didn’t want to
C
the teacher couldn’t make him
D
he couldn’t free himself to