If.........

1. a. If we have a cat, it will be such a mess
    b. If we had a cat, it would be such a mess
    c. if we had had a cat, it would have been such a mess

2. a. If he have hold me, i will not be fall
    b. If he had hold me, i would not be fall
    c. If he had held me, i would've not been fall

3. a. If you have press the button, this country will be blown up
    b. If you had press the button, this country would be blown up
    c. If you had pressed the button, this country would have been blown up

4. a. If i have a bar of chocholate, i will not share it with anyone
    b. If i had a bar of chocholate, i would not shared it with anyone
    c. If i had had a bar of chocolate, i would have not shared it with anyone

5. a. If he have catch the ball, we will win
    b. If he hold catch the ball, we would win
    c. If he had catched the ball, we would have win