I. Придаточные предложения времени и условия. Упражнение 1. Вставьте “if” или “when” If I’m late this morning, don’t

If I`m late this morning, don`t wait for me. If I don`t see you tomorrow, I`ll phone you. Do you mind if I close the window? When I get up in the morning, I usually drink a cup of coffee. Have something to eat. If you don`t eat now, you`ll be hungry later. John is still at school. When he leaves school, he wants to go to university. Be careful. If you aren`t careful, you`ll fall.