Situation: At the track and field stadium, I am joking with my friends. A: Now I ran four laps, so now is the fifth lap, isn't it? B: No, we are on our fourth lap now. we have six laps left. .C: I feel thirsty. After the last goal, let's go through the ground and head towards the changing room .A: Do not you have to cool down? B: For the moment,Let's do one lap for cool down. ↓ Situation:At the I'm jogging with my friends at the athletics stadium(ground). (At the athletics stadium(the ground),I'm jogging with my frineds.) A:Now we jogged 4th lap,Now is 5th lap,isn't it? B:No. we are on 4th lap now. we have 6 laps left. C.I feel thirsty,After the goal,I will go straight to the changing foom,through the ground. A:Don't you have to cool down? B:For the time being(FTTB),Let's do one lap for cool-down.(Let's use one lap to cool-down.)