You _____ pay your library fines. If not, you _____ not be allowed to graduate.
#90180
A
may; should
B
should; need
C
must; will
D
will; can
推荐题目
All of them felt it necessary that they______ __the meeting
#86823
A
attend
B
would have attended
C
attended
D
were to attend
She would rather _____ more money on books _____ on clothes.
#90117
A
cost … not
B
to spare … don’t
C
pay … than
D
spend … than
Water ____ be changed into vapour but it ____ be heated to its boiling point . 
#89755
A
may ; can
B
can ; must
C
may ; needn''t
D
must ; may