Почему в этих предложениях употребляется at, of, in. объясните 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.
