We carved their names on the stone so that younger generations could know what t

游客2024-07-19  13

问题 We carved their names on the stone so that younger generations could know what their forefathers______for the nation.

选项 A、did
B、were doing
C、had done
D、have been doing

答案 C

解析 在动作carved发生以前,从句中的动作已经发生了,所以从句中的时态应该比主句的时态更早。主句用一般过去时,从句应该用过去完成时。
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