1.- 1b 2b 3a 4a 5b 6b 7a 8a 9a 10a 11b 12b
2.- 1Melanie goes to school by bike. 2Lucas is playing football on Sunday. 3Johnny is going to the airport to meet his dad. 4Johnny´s dad went shopping in Macy´s in New York. 5The biggest shop in the world is in South Korea. 6Johnny is going to do his homework now.
3.- 1have 2There are 3 ´re chatting 4should 5any 6probably won´t 7Are you going to go 8mustn´t 9rains 10were walking