I. Choose the best word or phrase to complete each of the following sentences or do as directed
1. surfing
2. with
3. are polluted
4. waste
5. It's nice of you to say so
6. who
7. however
8. advises
9. interesting
10. imaginatively
11. keep
II. Supply the correct form of the words in parentheses to complete the sentences
1. necessary
2. effectively
3. consumers
4. free
III. Supply the correct tense of the verbs in parentheses to complete the sentences
1. is writing
2. have visited
3. happened
4. don't have