Điền giới từ thích hợp

1. Things were different ......................... I was young.
2. I do it ......................... I like it.
3. Let us wait here ......................... the rain stops.
4. You cannot be a lawyer ......................... you have a law degree.
5. She has not called ......................... she left last week.
6. I saw him leaving one ......................... two hours ago.
7. This is an expensive ......................... very useful book.
8. We were getting tired ......................... we stopped for a rest.
9. He was angry ......................... he heard when happened.
10. Walk quickly ......................... you will be late.
11. He had to retire ......................... of illness.
12. We will go swimming next Sunday ......................... it doesn’t rain.
13. I heard a noise ......................... I turned the light on.
14. Would you like a coffee ......................... tea?
15 i like bananas........apples