Почему в этих предложениях употребляется At, Of, In. Объясните пожалуйста 1 He was brilliant (at) football. 2 Tom is interested (in) gardening. 3 She is terrible (at) cooking. She burns everything. 4 My mother is fond (of) knitting. 5 Jim is keen (on) snowboarding. 6 Pam's father is proud (of) her achievements.