Question

what difficulties do they face in cleaning street

Answer 1

There are many difficulties in cleaning the street ...

They have to clean the wastes we put.
They have to clean whatever the waste may be.
And many people also spit along the streets.
Think, what if we clean that , can we ? I'm sure we can't.
So we should imagine ourselves doing such works and help to keep the country clean.

Hope this helps :)

Answer 2

There are many difficulties:

They can get hurt be sharp objects

They have to throw dust for every single time

They have to bare the bad smell of dust which can cause many diseases