1.In which situation do you telephone your friend?

1.In which situation do you telephone your friend? We may telephone our friend in different situations, for example, if we want to ask or say something, to invite him/her somewhere, to hear his/her voice, to learn some information and so on.2.When do we send a telegram? We send a telegram when we want to congratulate somebody, to inform somebody about a very important event, to ask somebody to meet us, to express our regret and so on.