Who can help me modify a small essay?Before I was 10 years old,I had never tried to swim util my friend invited me.Of course,we have tutor to teach us.At the beginning,the tutor advised us to warm up and eat a lot of chocolate in case of we don't have enough energy during we are swimming.
问题描述：
Who can help me modify a small essay?
Before I was 10 years old,I had never tried to swim util my friend invited me.Of course,we have tutor to teach us.At the beginning,the tutor advised us to warm up and eat a lot of chocolate in case of we don't have enough energy during we are swimming.
答
Before I was 10 years old,I had never tried to swim until my friend invited me.Of course,we had a tutor to teach us.At the beginning,the tutor advised us to warm up and eat a lot of chocolate in case that we might not have enough energy during our swimming.