Fill in: about, at, in, of, on.
1 My sister is very good ............ painting.
2 My mum was so proud ............ my little sister for winning the beauty contest.
3 I'm not too keen ............ aerobics but I love dancing.
4 My granddad is extremely interested ............ history.
5 Our PE teacher is crazy ............ snowboarding.
Предлог после прилагательного надо выучить как сочетание:
