18.4 Complete the sentences with for ... or since ...

1. She is in London now. She arrived there four days ago. She has been there for four days.
2. Jack is here. He arrived here on Thursday. He has been here since Thursday.
3. It is raining. It started an hour ago. It's been raining for an hour.
4. I know Sue. I first met Sue two years ago. I've known Sue for two years.
5. I have a camera. I bought it in 1985. I've had a camera since 1985.
6. They are married. They got married six months ago. They've been married for six months.
7. Liz is studying medicine at university. She started three years ago. She has been studying for three years.