VII. Supply the correct word form for these following words.

1.      There is a slight _{……………………………..} in the price of oil. (reduce)

2.      He could see the _{……………………………..} in her eyes. (disappoint)

3.      He has been an active _{……………………………..} in the contest. (participate)

4.      Visitors were _{……………………………..} that the museum closed today. (disappoint)

5.      The chemicals have been identified as a source of _{……………………………..}. (pollute)

6.      Environmental _{……………………………..} is everybody’s responsibility. (protect)

7.      She divorced her husband because he is very _{……………………………..} to the children. (kind)

8.      She never _{……………………………..} in any of our discussions, does she? (participation)

9.      What is responsible for the _{……………………………..} problems in your city ? (environment)

10.     Energy _{……………………………..} reduces your fuel bills and helps the environment (conserve) 

xin mn giúp mik !!!