—What a pity! Their experiment is a failure.—They ________ better under more favorable conditions.
#86419
A
should have done
B
could have done
C
must have done
D
may have done
推荐题目
If he ______ my advice, he wouldn’t have lost his job.
#87253
A
followed
B
should follow
C
had followed
D
would follow
They demanded that the books________ to the school library at once.
#86780
A
return
B
should return
C
be returned
D
would be returned
It is hard for me to imagine what I would be doing today if I ________ in love，at the age of seven，with the Melinda Cox Library in my hometown.
#86625
A
wouldn't have fallen
B
had not fallen
C
should fall
D
were to fall
--- I stayed at a hotel while in New York .--- Oh, did you? You ＿＿＿＿ with Barbara．
#88941
A
could have stayed
B
could stay
C
would stay
D
must have stayed
The officer commanded that the supplies of food and clothes ______ to the flooded area.
#86801
A
should send
B
be sent
C
were sent
D
would send