напишите 7 предложений на perfect simple

1. I have already done all my homework for tomorrow and I can go for a walk with my friend now. 2. My elder brother has won the city chess competition this week. 3. Have your parents already come back from their trip to Egypt? 4. I have never seen my cousin who lives in the United States. 5. Has the teacher already checked our dictations? 6. I have not been to the capital of your country yet. 7. The children have already had their dinner and they are playing in the yard now.