1. I lose the key, so I cannot get into the house.
-> If I didn't lose the key, I could get into the house.
2. They are too young to join the army.
-> They are not old enough to join the army.
3. She won't come unless you invite her
-> If you invited her, she would come.
4. We can't hang the picture on the wall. It is heavy.
-> The picture is too heavy for us to hang the picture on the wall.
5. They were tired. They were hungry.
-> They were not only tired but also hungry.
6. They finish their work. They went home.
-> Finishing their work then they went home.
7. She goes out in the rain. She gets wet.
-> If she didn't go out in the rain, she wouldn't get wet.
8. Tom can't lift the table. He isn't strong enough.
-> Tom is not st