STAGE 2 ELEMENTARY. 700 Headwords.present perfect - will (future) - (don't) have to, must not, could - comparison of adjectives - simple if clauses - past continuous - tag questions - ask/tell + infinitiveGreg is a teenager with a problem - his father. After the death of Greg's mother in an accident, his father takes no interest in life at all. Greg tries hard to help him. His father is too old to rock and roll,of course...or is he?These short stories by Jan Mark look at life, love, and friendship through teenager's eyes.