4. A: The newspaper printed an article about them last week.
B: Yes, I know. They have raised £6 million for charity so far.
5. A: I haven’t seen Tina for a long time!
B: Really? She was at the volunteer centre this morning.
6. A: John looks tired!
B: He has been working at the charity event for three hours now.
7. A: How long have you been waiting in the queue?
B: Oh, for about ten minutes now.
8. A: Is Jane still at the homeless shelter?
B: Yes, she has been helping out all day.
