First, I wrote a letter. Second, I showed him the letter., I showed him a letter that I’d written. // I wrote a letter and a few days later I showed it to him., First, I looked through the window. Second, it started raining., When I looked through the window it had rained., First I had dinner. Second, you called., When you called, I’d had dinner., First, she bought a T-shirt on sale. Second, she gave it to me., She bought a T-shirt in the sales and gave it to me as a birthday present.// She gave me a T-shirt that she had bought on sale., First, the teacher arrived. Second, I finished my composition., When the teacher arrived, I finished., First, I finished the composition. Second, the teacher arrived., → When the teacher arrived, I’d finished the composition.

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