We______________last night,but we went to the concert instead.
#88244
A
have studied
B
might study
C
should have studied
D
would study
推荐题目
Are you still here? You ______ home hours ago. 
#89553
A
should go
B
should have gone
C
might go
D
may have gone
If Sanlu Group     melamine to the milk,the babies     too much from kidney stone.
#87595
A
didn’t add; would not suffered
B
hadn’t added; wouldn’t have suffered
C
hasn’t added; wouldn’t have suffered
D
hadn’t added; would have suffered
Thank you for giving me a hand. I ______ in the experiment without your valuable help. 
#89288
A
have failed
B
will fail
C
would have failed
D
must have failed