1. I'm keen (т.к on)

2. I'm fond (т.к of)

3. I really enjoy them. (т.к.sports)

4.I' really bad (т.к. at)

5.I' mad (т.к.about)

Ответ:

1. im keen

2. im fond

3. I really enjoy them

4. im really bad

5. im mad

Объяснение: