[解析]
6.A 7.C
M:What are you going to do this afternoon?Would you like to shop with me?
W:Well,I'm going to practice baseball with my friend later.
M:What time is your baseball practice this evening?
W:Helen asked me to practice at her house at 5:00 p.m.
M:That's fine.I can drop you off there after we finish shopping.You might be a bit early.Can you ask Helen if that's okay?
W:Sure.Shall I call her?
M:Of course.
W:But my phone is in the car.I'll call her later.