Okay, let's analyze what Roger has to do or doesn't have to do based on the provided list and add question tags where appropriate.
1. **order more trees done!** Roger has already ordered more trees, so he *doesn't have to order more trees, does he?*.
2. **call the recycling centre** Roger *has to call the recycling centre, doesn't he?*
3. **tidy the eco-library Sally & Andy** Roger *has to tidy the eco-library with Sally & Andy, doesn't he?*
4. **clean out the clubhouse** Roger *has to clean out the clubhouse, doesn't he?*
5. **buy more wood and nails next week** Roger *has to buy more wood and nails next week, doesn't he?*
6. **give out membership cards** Roger *has to give out membership cards, doesn't he?*
**Answer:**
* Roger doesn't have to order more trees, does he?
* Roger has to call the recycling centre, doesn't he?
* Roger has to tidy the eco-library with Sally & Andy, doesn't he?
* Roger has to clean out the clubhouse, doesn't he?
* Roger has to buy more wood and nails next week, doesn't he?
* Roger has to give out membership cards, doesn't he?