The child was running in the street when he (_)(fall)to the ground.she(_)(write)a letter when i went to her house.I (_)(hear)the story before you told it to me.after he (_)(wash) the dishes,she began to clean the table.

问题描述:

  1. The child was running in the street when he (_)(fall)to the ground.

  2. she(_)(write)a letter when i went to her house.

  3. I (_)(hear)the story before you told it to me.

  4. after he (_)(wash) the dishes,she began to clean the table.

1 fell
2 was writing
3 have heard
4 washed

1 fell
2 was writing
3 had heard
4 had washed
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