Each sentence has one mistake. Find and correct it. Number 0 is an example

Part 5. Each sentence has one mistake. Find and correct it. number 0 is an example
25. There is a good film on at sao mat thearter , isn't it ? (...................-->.................)
26. Water and land around the chemical factory are serious polluted. (...................-->.................)
27. He will look for the garden when we go on holiday. (...................-->.................)
28. Now go to bed and close your eye.You will feel fine after a good night sleep. (...................-->.................)