2. carol and i are old friends. we (to know) each other since we (to be)in primary school. 3. as soon as i (to get)home tonight i (to give) you a call.

2.    Carol and I are old friends. We have known each other since we were in primary school. - Кэрол и я старые подруги. Мы знали друг друга с тех пор, как учились в начальной школе.

3.  As soon as I  get home tonight I shall give you a call. - Как только я доберусь до дома сегодня вечером,  я позвоню тебе.