1) a1, b2 , c4 , d7 , e3 , f5 , g6
2) -I mostly use my mobile phone for sending text messages.
    -Yes , me too , I also use it to make calls. Do you ever use it to wake up in the morning?
    -I don't, I have an alarm clock.
    -Maybe , you use it to play music?
    -No, I have an mp3 player. And what is about you? Do you use your mobile phone to listen to the radio.
    -I don't listen the radio.
    -Do you use your phone to organise your day?
    -Yes I do, because it is very cose(удобно). And for what then do you use eour mobile phone? 
    -I use my phone only to make calls, send SMS and take photographs.
3) 1a, 2b, 3c
4) A. Hi Tim! Just got on plane. So excited can't wait to see you! Land at 8. Talk to you later.
B.Great! Will be at airport to meet you. Looking forward to seen you too. Have a good flight.
C. Plane landed. Getting luggage. Where are you?
D. Stuck in traffic: Will be there as soon as possible. Will text you when arrive.
E. Will wait for you in cafe. 
F. Here at last. Heathrow airport huge. Which cafe?
G. HEATHROW??!! Did I say Heathrow?I mean Gatwick!