Proposition help.

I am doing some training on propsition and I noticed that I'm not good at all. So I need you guys to help me out. So can you guys underline the propositions and have a very brief explanation.

Thank you very much, Ryan.

1. We were at the church last Sunday.
2. We started our journey at 8 on Monday morning.
3. During the election campaign it is hectic in the office.
4. Last week I went for a swim in the lake.
5. When going abroad you need to bring your passport and some extra change.
6. When I am reading a good book, I like to have a cup of hot chocolate and some
biscuits.
7. Some people think that driving is easy, I think it is hard and complicated. But with the
right instructor I find it easier too.
8. As we left the house to go to school, I noticed that I had forgotten my books.
9. There are, according to different sources, about 750million speakers of English today.
10. As her father you are responsible for her.