—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
Without your help,we       this task.
#89666
A
don’t finish
B
will not finish
C
didn’t finish
D
would not have finished
The boy student is poor in health now; his parents wish that his health _____when he grows up
#88103
A
can improve
B
could improve
C
can be improved
D
could be improving