The child was running in the street when he (_)(fall)to the ground.she(_)(write)a letter when i went

题目

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.

答案

1 fell
2 was writing
3 had heard
4 had washed
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