--- The fog is so thick that the express way ____ have been closed. --- You are right. I ____ have thought of that. Now we have to take another road.
#63639
A
can; should
B
may; can
C
should; must
D
must; should
推荐题目
You’d better put on a heavy coat.Sometimes it________be very cold here at night.
#62312
A
should
B
can
C
will
D
must
-- Must I return the book by the end of next month?-- . You can keep it as long as you like.
#62836
A
No, you mustn’t
B
No, you can’t
C
Yes, you have to
D
No, you needn’t
—Is Nick coming by train?—He should, but he ________ not. He likes driving his car.
#62409
A
must
B
may
C
can
D
need
--It is really fun to hike and I often go hiking in the forest.--But hiking alone in the forest ______ be very dangerous.
#63596
A
can
B
must
C
shall
D
will