điền giới từ a/an/the hoặc x 1. There was . . . knock on . . . door. I opened it and found . . . small dark man in . . . blue overcoat and . . . woollen cap. 2. He said he was . . . employee of . . . gas company and had come to read . . . meter. 3. But I had . . . suspicion that he wasn't speaking . . . truth because . . . meter readers usually wear . . . peaked caps. 4. However, I took him to . . . meter, which is in . . . dark corner under . . . stairs (. . . meters are usually in . . . dark corners under . . . stairs). 5. I asked if he had . . . torch; he said he disliked torches and always read . . . meters by . . . light of . . . match. 6. I remarked that if there was . . . leak in . . . gaspipe there might be . . . explosion while he was reading . . . meter. 7. He said, 'As . . . matter of . . . fact, there was . . . explosion in . . . last house I visited; and Mr Smith, . . . owner of . . . house, was burnt in . . . face.' 8. 'Mr Smith was holding . . . lighted match at . . . time of . . . explosion.' 9. To prevent . . . possible repetition of this accident, I lent him . . . torch. 10. He switched on . . . torch, read . . . meter and wrote . . . reading down on . . . back of . . . envelope. 11. I said in . . . surprise that . . . meter readers usually put . . . readings down in . . . book. 12. He said that he had had . . . book but that it had been burnt in . . . fire in . . . Mr Smith's house. 13. By this time I had come to . . . conclusion that he wasn't . . . genuine meter reader; and . . . moment he left . . . house I rang . . . police.