Answer:
1. Don't really know how to do it
2. I wish I had ate before going out
3. I wish I had slept longer, I am tired
4. If the order had arrived faster, I would have eaten dinner by now
5. If I had studied for the exam, I wouldn't have failed it.
This doesn't really make sense to me; I did it my own way. Make sure to double check!
Step-by-step explanation: