1. Presumably, you have had work experience.
2. I suppose that I should explain my opinion.
3. In all likelihood, a lawsuit would be settled outside court. 십중팔구!
4. I wish I would live lived in Hawaii.
5. As a rule, it would be good if people show up on time.
6. Suppose your life would be less than 6 months.
-> Suppose you only had six months left to live.
7. If it were up to me, I would ban violent shows on TV.
8. Here I am assuming that those invention would not be presence. -> Here I am assuming that such an invention does not already exist.
9. Let's assume that global population world populations keeps growing increasing at their its current rate.
10. I suppose patience would be most necessary when raising children.
-> I believe patience is most needed when raising a young child.
11. I would loan the money to you on the condition that you pay me back within 6 months.
-> I will loan you the money on the condition that you pay me back within 6 months.
12. One advantage would be cheaper rent if you live with my roommate.
13. I would gladly give up a holiday in order to if I earned some extra income.
14. A lawyer may come across a case when his client is guilty.
-> Lawyers may come across a case where they know their client is guilty.
15. If I would go England providing that I had chance to be anywhere in the world.
-> If I had an opportunity to go anywhere in the world, I would want to visit England.