We _______the letter yesterday, but it didn”t arrive.
#63105
A
must receive
B
ought to receive
C
must have received
D
ought to have received
推荐题目
The school rules state that no child _____ out of the school, unless accompanied by an adult. 
#63402
A
shall allow
B
shall be allowed
C
will allow
D
will be allowed
 ---Must I do the work today? ---No, you _______. You may do it tomorrow.
#78312
A
can’t
B
mustn’t
C
shouldn’t
D
needn’t
----I passed the college entrance examination.----Congratulations! You________.
#63093
A
could have studied hard
B
must have studied hard
C
should have studied hard
D
might have studied hard