6 Complete the text. Choose the best alternative.

6. Заполни пропуски:

They've just started this new recycling system where we live and it's very simple. You know in some places you (a) have to put all your paper in one bin, plastic in another bin, metal in another and so on? Well, with this system, you (b) don't have to bother with all that, everything goes into the same bin. They are very strict about food, though. There's a big red notice on the side of every bin that says you (c) mustn't put any food in it. That's OK, and I think most people know that food (d) has to be kept separate. And the other good thing is you (e) don't have to pay for anything - the whole system is completely free. They'll even take away big items like old sofas or beds, but you do (f) have to ring them and let them know if you want them to do that.