题文
-The terrible accident is under investigation.
-Actually, quicker action __________ those workers trapped in the mine.
| A．may have saved |
| B．could have saved |
| C．must have saved |
| D．should have saved |
推荐试卷
-The terrible accident is under investigation.
-Actually, quicker action __________ those workers trapped in the mine.
| A．may have saved |
| B．could have saved |
| C．must have saved |
| D．should have saved |
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