Conozco means 'I know' Spanish is very different from English so it doesn't translate exactly but if it were, 'Yo lo se bien' it would be something like 'I know well' and when its 'Yo lo conozco bien' it means I know him well. That fits the contexts of the situation
El cuerpo es el contenido principal de una carta y es el desarrollo de lo que se desea comunicar al destinatario. Cada idea nueva debe presentarse en un párrafo aparte.
