1. They've (filled/ been filling) over six bags with rubbish from the beach already.

2. Have you (followed/ been following) that story in the papers about the elephant that escaped from the zoo?
Apparently, they've just (caught/ been catching) it.

3. We've (seen/ been seeing) the Tower of London, Buckingham Palace and Oxford Street, and we've only been in London for three hours!

4. It's the first time I've (heard/ been hearing) The Editors play live.

5. Jake and I have (thought/ been thinking) about where to go on holiday for weeks but we just can't decide.

6. You can't want to go to the toilet already - we've only (driven/ been driving) for about ten minutes so far!

7. I've (stood/ been standing) up all day and my feet are killing me!

8. Has Jan (worked/ been working) for the company since it started?