4

Answers:
1 — f
2 — b
3 — c
4 — e
5 — d
6 — a

Why:

1. You’re going to trip — prediction based on what we can see or know (f).
2. Are going to move — a planned action or intention (b).
3. I think I’ll have — prediction based on what we think (c).
4. The bus leaves — a timetable or schedule (e).
5. I’m seeing — a fixed arrangement in the near future (d).
6. I’ll open — a decision made at the moment of speaking (a).

Remember:

• will: spontaneous decision or personal prediction;
• be going to: prior plan or prediction from present evidence;
• Present Continuous: fixed personal arrangement;
• Present Simple: timetable or schedule.