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
Mr. Bush is on time for everything. How ____ it be that he was late for the opening ceremony ?
#90283
A
can
B
should
C
may
D
must
—Your composition is full of mistakes. —I wish I _________more careful.
#88263
A
would have been
B
had been
C
would be
D
were
We _____ live in a small flat but last year we bought a house.
#88071
A
would
B
had to
C
used to
D
ought to
It is important that we wild animals.
#87824
A
ill protect
B
hould protect
C
hall protect
D
re protecting
John agreed to the suggestion that his students _____ two weeks to prepare for the exam.
#86438
A
give
B
should give
C
be given
D
must be given