Jenny: Are you OK, John? You don't look well.John: I feel terrible. Jenny: Oh dear! What's wrong?John: I've got a dreadful toothache. Jenny: Why don't you take a painkiller?John: I did, but it still hurts.Jenny: When did you take it? About an hour ago.Jenny: Well, it should make you feel better soon.John: I can't stand it any longer. Jenny: Then you should see a dentist.John: I hate going to the dentist. Jenny: I'm sorry, but you have to go. John: I suppose you're right.​