Synonyms for 'task' and 'duty'

Hi, Dave. I'm calling to see if you have any ..... for the weekend. We could go out and have some fun if you like.

Hi, Mario. I do actually have a homework ..... to do. The deadline's Monday and I'm afraid I'll have to do it during the weekend, so I'll be quite busy.

What's the ..... of your homework? What's the topic you've got to write about?

Well, it's for my architecture course. I've got to write something about the interior ..... of luxury hotels. You know, the way they look inside: furniture, colours, etc.

Dave, I can help you if you want. I'm very good at drawing and I could make some ..... for you to show what it looks inside, just quick drawings without too much detail.

Mario, that's great. I was thinking of asking you but I didn't want to take up your time. It's not a particularly easy ..... having to do this sort of homework and I'm not really keen on it, either.

Oh no, on the contrary. I'd love to help you. Drawing is a hobby of mine, so don't worry. I'll look on it as a pleasure rather than a(n) ......

In that case, why don't you comeover so that I can explain to you exactly the main ..... of my homework?

We can work out a ..... a bit at a time

For the ..... we've got to complete, it'll be easier and more fun if we do it together. And maybe afterwards we could go out and enjoy ourselves.