13.1 Write the words. Choose from the words in the box. ache again ago back bag big bigger bike black called cake classical coffee cold comb gave get give great guess guest keys kiss walk work carry grey come copy 1 /giv/ 2 /big/ 3 /get/ 4 /kǝum/ 5 /ki:z/ 6 /keik/ 7 /kis/ give 8 /eik/ 9 /gest/ 10 /bæk/ 11 /'kofi/ 12 /ǝ'gen/ 13 /wɔ:k/ 14 /kɔ:ld/ 15 /bæg/ 16 /'bigǝ/ 17 /kǝuld/ 18/'kæri/ 19 /w3:k/ 20 /grei/​