12.accustomed 13. a) amazed b) puzzled c) experienced d) pleased 14. a) confident b) certain c) efficient d) skilful 15. a) strong b) great c) powerful d) large
12.accustomed 13. a) amazed b) puzzled c) experienced d) pleased 14. a) confident b) certain c) efficient d) skilful 15. a) strong b) great c) powerful d) large