Give the correct form of verb:
    1. The teacher will be angry with you if you ............. you your homework (NOT DO).
    2. If he ........... me what was wrong, I could help him (TELL).
    3. If you hadn't watered the flowers they ......... (DIE).
    4. I ............. if I had time (COME).
    5. He will play tennis if the weather ........ good (BE).
    6. If I ............ I would have come earlier (KNOW).
    7. I wouldn't say it if I ....... you (BE).
    8. If she wears a necklace her dress ........... better (LOOK).
    9. The children can stay up late if they ....... good (BE).
    10. We would die if the plane .............. (CRASH).