We _______ talk loudly when we see the sign “ Be quiet ”on the right.
#78159
A
must
B
mustn’t
C
need
D
needn’t
推荐题目
I ______ her, but I never could.
#63534
A
ought to help
B
must help
C
ought to have helped
D
must have helped
—Is John coming by train.—He should，but he ________ not.He likes driving his car.
#62500
A
must
B
can
C
need
D
may
I chose the most popular major instead of my favorite one，but I had to drop out and started again where I＿＿＿have gone in the first place.
#62875
A
must
B
might
C
should
D
would
It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
#62951
A
may
B
couldn’t
C
should
D
needn’t