Объяснение:
12) When people eat too many sweets, they get fat
13) When I study hard, I pass my exams
14) If you drink that, you will get ill
15) If my dad has time next week, we will paint my room
16) I will give her the book, If I see her
17) Amanda would look completely different when she had her hair cut
18) If she studied harder, she would get better
19) If I watched TV at night, I wouldn't sleep very well