1. A: Is Liam still at the gym? B: Yes, he exercised/has been exercising there since noon. 2. A: Have you known/Have you been knowing Katie for long? B: Yes, we have played/have been playing tennis together for 5 ye 3. A: What have you done/have you been doing, Helen? You look e B: I know. I have jogged/have been jogging in the park all morn 4. A: Sorry I'm late - the traffic was awful. B: Don't worry. I haven't waited/haven't been waiting for long.
