Okay, let's fill in the gaps in the dialogue with the most appropriate responses:
T: Could you help me with graffiti painting at the competition next Saturday?
B: Oh, I'm not sure. I've never done it, I mean, never used spray paint before.
T: Please, help me, I really need somebody to help, or I can lose it.
B: Well, okay, but I need some practice.
T: Great! I'll show you how to use the spray paint and my stencils.
B: Ok, then,
T: Thanks so much! You're a friend indeed!
Here's the dialogue with the completed options:
T: Could you help me with graffiti painting at the competition next Saturday?
B: Oh, I'm not sure. I've never done it, I mean, never used spray paint before.
T: Please, help me, I really need somebody to help, or I can lose it.
B: Well, okay, but I need some practice.
T: Great! I'll show you how to use the spray paint and my stencils.
B: Ok, then,
T: Thanks so much! You're a friend indeed!