21* choose the correct response.a: can i have a ticket to london, please? b: a certainly. single or return? b single, please2a: thank you for your help.b: a thank you. b you're welcome3a: that's £95, please.b: a here you are. b you're welcome.4a: can you tell me which platform it leavesfrom? b: a the 16: 35 train.b it leaves from platform 4.
ответ: 1) a
2) b
3) a
4) b
Объяснение:
1) а
2) б
3) а
4) б
наверное