—I don’t suppose they could have finished their experiment, they?— , they are still doing it in the lab.
#87846
A
could; Yes
B
didn’t; No
C
have; No
D
couldn’t; Yes
推荐题目
—Excuse me, visiting hours are over．It' s time for you to leave．—I' m sorry, I didn't know the time or I ______ earlier．
#87146
A
will leave
B
would leave
C
had left
D
would have left
It has been announced that candidates _______ remain in their seats until all the papers have been collected.
#89405
A
can
B
will
C
may
D
shall
This cake is very sweet．You __________ a lot of sugar in it．
#87614
A
should put
B
could have put
C
might put
D
must have put
They were abroad during the months when we were carrying out the investigation, or they _____ to our help.
#86376
A
would have come
B
could come
C
have come
D
had come