Choose the correct answer:
It’s a long journey, so I’m going to take some sandwiches in case we get hungry. I think we’ll enjoy it (1) unless / as long as we have some good magazines to read. We should get there at about seven, (2) in case / providing that the traffic is all right. I won’t phone you (3) as long as / unless there’s a problem.
Don’t meet us at the bus station (4) provided that / unless you really want to. We can easily walk to your house from there. I’ll bring the map (5) in case / as long as I can’t remember the way. I’m really looking forward to seeing you! It will be great to walk round Edinburgh again (6) provided that / in case it doesn’t rain!