问题
The terrible accident is under investigation.— Actually, quicker action ____ those workers trapped in the mine. [ ]
A: might have saved
B: must have saved
C: ought to have saved
D: should have saved
B: must have saved
C: ought to have saved
D: should have saved
正确答案是：
同类题型
Whoever ________ a crime can never escape from being punished.
Could you tell me ______ —Sure, just five minutes ago.
Would you please ____ _ her _____ me back— All right, I will tell her.
If you plant watermelon seeds in the spring，you ________ fresh watermelon in the fall.(2010·浙江)
Mother wanted to be a good provider, a role she________since her marriage to Father. [ ]