Complete the following conversation with ONE suitable word:
26 A: i'd Like a ........ to manchester,please.
27 B: single or......... ?
A: single, please. How much is it?
B: it's £20, please
28 A: which ........it is ?
B: it's number 9
29 A: is it a........ Train?
30 B: I'm afraid not. You have to ..... at Luandon.