2. 职称英语
  3. When I knocked at the door, my mother ______.A、cookedB、was cookingC、cookBwhen

When I knocked at the door, my mother ______.A、cookedB、was cookingC、cookBwhen

游客2025-07-04  22
问题 When I knocked at the door, my mother ______.
选项 A、cooked
B、was cooking
C、cook
答案 B
解析 when引导的状语从句用一般过去时，主句用过去进行时表示“当…时，某人正在做某事”。
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