walk on the grass
You mustn't walk on the grass.
look after (доглядати) the animals
You must look after the animals.
water the flowers
You must water the flowers.
drop litter
You mustn't drop litter.
pick the flowers
You mustn't pick the flowers.
swim in the fountain
You mustn't swim in the fountain.
cut the trees
You mustn't cut the trees.
put litter in the bin
You must put litter in the bin.
wash your hands
You must wash your hands.
walk on the path
You must walk on the path