How clean is my classroom?

I think that my classroom is very clean, as it has no rubbish on the floor usually.If the floor has rubbish someone who sees it will pick it up.It is very important to keep the classroom clean as if the classroom is dirty , then we will not have a good environment to study in and there will be bacteria every where.I will keep my classroom clean everyday by picking up litter and throw it into the bin.I participate in sweeping.I have learnt that we have to keep the classroom cleanand the floor will be as cleam as a new floor if we help to sweep the classroom .We must have the sincerity to do it .