The interstate highway system makes long-distance travel by car fast
            and convenient. Interstate highways are clearly marked with numbers:
            odd¹ numbers mark north and south routes and even numbers mark east
            and west routes. Such toll² roads as turnpikes, thruways and parkways
            are part of the interstate system. The speed limit on all highways
            is 55 miles per hour unless otherwise posted. Remember that 1
            mile=1.6 kilometers.

            1.A: We'd better stop and rest pretty soon.
            B: OK. I'll look at the map to see exactly where we are.
            A: Do you think we'll have any trouble finding³ a room for the night?
            B: I'm sure it'll be easy to find a place.

            2.A: We have to watch for Interstate 87?
            B: Right! We still have a ways to go, though.
            A: How about staying at a hotel in a city tonight?
            B: It might be hard to find a good place to stay this late.

            3.A: Let's stop soon. We've driven enough for one day.
            B: All right, but we still have a little farther⁴ to to.
            A: I think we should try to find a reasonable motel⁵ tonight.
            B: That shouldn't be hard to do.

            4.A: Shouldn't we start looking for a place to stay?
            B: OK. Why don't you check the map to see where we are.
            A: I hope we can find a cheap place to spend the night, don't you?
            B: I don't think we'll have any trouble