Every solid object ______ reflect a sound，varying according to the size and nature of the object．
#87543
A
must
B
shall
C
will
D
should
推荐题目
We lost our way in that small village，otherwise we ________ more places of interest yesterday.(2012·福建)
#86542
A
visited
B
had visited
C
would visit
D
would have visited
---.Don’t you think it necessary that he ____to Miami but to New York? ----I agree , but the problem is _____he has refused to.
#87569
A
will not be sent ; that
B
not be sent ;that
C
should not be sent; what
D
should not send; what
—What do you think we can do for our aged parents？—You do anything except that you visit them as often as possible.
#89841
A
don’t have to
B
oughtn’t to
C
mustn’t
D
shouldn’t
I was really anxious about you. You _____ __ home without a word.
#90288
A
mustn’t leave
B
shouldn’t have left
C
couldn’t have left
D
needn’t leave