题目内容
—My goodness! The accident might not have happened if we had done it more carefully.
—But we .
—But we .
| A.haven’t | B.wouldn’t | C.hadn’t | D.didn’t |
D
考查时态。根据题中用了过去事实相反的虚拟语气,故可知用一般过去时,选D。
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