Составить утвердительные,отрицательные и вопросительные предложения и короткие ответы с 5-ью ошибочными

1. My pen-friend from Switzerland wrote me a letter a week ago.
My pen-friend from Switzerland did not write me a letter a week ago.
Did my pen-friend from Switzerland write me a letter a week ago? Yes, he did. / No, he didnt.
2. Her parents bought her a new computer for her birthday last month.
Her parents didnt buy her a new computer for her birthday last month.
Did her parents buy her a new computer for her birthday last month? Yes, they did. / No, they didnt.
3. We had our dinner two hours ago.
We didnt have our dinner two hours ago.
Did we have our dinner two hours ago?
Yes, we did. / No, we didnt.
4. His brother won a swimming competition yesterday.
His brother did not win a swimming competition yesterday.
Did his brother win a swimming competition yesterday? Yes, he did. / No, he didnt.
5. We swam in the ocean last summer.
We didnt swim in the ocean last summer.
Did we swim in the ocean last summer?
Yes, we did. / No, we didnt.