Iii. fill in: about, in, at(3), of (3), for, on. 1) she is fantastic … cooking. 2) ann is crazy …rock climbing.’ 3) he isn’t interested … maths. 4) i’m not fond … animals so i don’t have a pet. 5) john is really keen … football. 6) tim is responsible … booking the concert tickets. 7) my father is in charge …a team of ten people. 8) i am not very good … sports. 9) they are very proud … their achievements. 10) luke is brilliant … basketball.