STAGE 4 PRE- INTERMEDIATE (1400 Headwords). Relative clauses with who, which, that-Conditional forms would, could, might-Two nominal phrases in co-ordination-Adverbial clauses of purpose-concession, condition- Maximum of three clauses: main clause + two subordinate clauses - Main clause + one co-ordinate clause.As Mary watched the robin, she noticed an old metal ring half-buried in the earth where the dog had been digging. She reached down and picked the ring up. But it wasn't just a ring. It was an old key, and it looked as if it had been buried for a long time.Mary stood up and looked at it. She felt almost frightened. 'Perhaps it has been buried for ten years,' she said in a whisper. 'Perhaps it is the key to the secret garden.'Mary Lennox arrives from India to live with her uncle in Yorkshire. She is lonely and unwanted. Then one day, Mary finds a secret garden...- Audio CD/download- Extra grammar and vocabulary exercises- Notes about the life of Frances Hodgson Burnett- Notes about the history- Points for understanding comprehension questions- Glossary of difficult vocabulary.