1. If you are stupid, you will be fired.
2. If you don't care, he can get lost.
3. If she has money, that's why she will do that.
4. If she doesn't take it, she will feel better.
5. If we drop his games, we will get lost.

 

2, care it, or he can be lost
He can be lost if you don't care.
3 she has money, that is why she will do that
She will do that because she has money.
4 she doesn't take it, so she will feel better
She will feel better because she doesn't take it.
5 we dropped his games, so we would get lost
We dropped his games so that we wouldn't get lost.