1. is waiting, has been waiting
2. are doing, have been doing
3. are talking, have been talking
4. am sitting, have been sitting
5. are you doing, am working, have you been doing, have been working
1. is waiting, has been waiting
2. are doing, have been doing
3. are talking, have been talking
4. am sitting, have been sitting
5. are you doing, am working, have you been doing, have been working