Write the correct form of the word given in each sentence

VI. Write the correct form of the word given in each sentence. (1,5 points)
29.
He has been now
as a presidential candidate.
safe.
Hydroelectric power is inexpensive and
30.
31. We all enjoy listening to his
32. Some volunteer
33. There is a(n)
34. Sulphur dioxide is one of several
atmosphere by coal-fires power stations.
stories.
help to clear up the beach.
need for greeting cards when Christmas Day comes.
that are released into the
(nominate)
(environment)
(humor)
(conserve)
(consider)
(pollute)