Final answer:
The detailed answer provides the correct simple past form of verbs for the given sentences.
Explanation:
Simple Past Tense Exercise:
- We wished we knew what would happen.
- The dog would sit if you told him to.
- I played chess when I was a child.
- The children waved goodbye to their grandparents.
- Columbus discovered America about 400 years ago.
- Last year it rained heavily.
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