Объяснение:
1) If he won't work, he'll fail his final exams. (b)
2) If the weather will be fine tomorrow, we'll go to the park. (b)
3) If I were you, I would give up smoking. (b)
4) If Tom saw a car crash, he would telephone the police. (c)
5) I would bought that coat if I were you. (d)
Как то так ヾ(•ω•`)o