Something ___ to save our earth. Do you think so?
#88938
A
can do
B
must do
C
has to do
D
must be done
推荐题目
It was dangerous for you to swim in that river. You eaten by the fish.
#87286
A
might have been
B
must have been
C
could have been
D
should have been
—Sorry, the tickets have already been sold out.—Really? Maybe I _______ a little earlier.
#86439
A
should come
B
should have come
C
could have come
D
must have come
You would have helped your mother do some housework. But you ____.
#89579
A
don’t
B
didn’t
C
wouldn’t
D
weren’t
—I think I'll give Bob a ring.—You ______. You haven't been in touch with him for ages.
#89842
A
will
B
may
C
have to
D
should
I would rather you did some reading while you are free, but you ______．
#87626
A
don’t
B
didn’t
C
wouldn’t
D
weren’t