Grammar Exercise: Third Conditional

1. I wasn't thirsty. I didn't drink the lemonade.
    If I was thirsty, I would drink the lemonade
    If I had been thirsty, I would've drunk the lemonade
    If I would have been thirsty, I drank the lemonade

2. I didn't know Kirsty was in town. I didn't call her.
    If I had known Kirsty was in town, I would have called her
    I had called Kirsty if I had know she was in town
    I would had called Kirsty if I have known she was in town

3. I didn't know watching this documentary was important for our exam. I didn't watch it.
    If I knew this documentary was important, I had watched it
    If I would have known this documentary was important, I had watched it
    If I had known this documentary was important, I would've watched it

4. I walked home from the disco. My friend was too drunk to drive.
    I hadn't walked home from the disco if my friend wasn't too drunk to drive
    I wouldn't have walked home from the disco if my friend hadn't been too drunk to drive
    I wouldn't had walked home from the disco if my friend hadn't been too drunk to drive

5. I didn't go to the store. I thought it closed at 5pm. It closed at 6pm.
    If I had known the store had closed at 6pm, I would've gone
    If I knew the store would have closed at 6pm, I would've gone
    I would've gone to the store if I know it had closed at 6pm

6. I ate the yoghurt in the fridge. I thought it was mine, not yours.
    If I would have known the yoghurt was yours, I wouldn't have eaten it
    If I had known the yoghurt was yours, I wouldn't have eaten it
    I hadn't eaten the yoghurt if I knew it was yours

7. I am really hungry now. I didn't have any breakfast.
    If I had some breakfast, I wouldn't be hungry now.
    If I would had had some breakfast, I wouldn't be hungry now.
    If I had had some breakfast, I wouldn't be hungry now

8. I didn't see Tony at the party. I wanted to speak to him about his vacation in France.
    If I saw Tom at the party, I would've spoken to him
    If I had seen Tom at the party, I would've spoken to him
    If I would have seen Tom at the party, I would've spoken to him