I. 1. films at least once a week
2. can harm your eyesight
3. celebrating the word's unity in diversity
4. my Birthday
5. oxygen and water
II. 1. the biggest
2. more comfortable
3. as tall
4. darker
5. the nicest
III. 1. should
2. can't
3. needn't
4. may
5. should be
6. can't
IV. 1. in
2. to, by
3. to
4. to
V. 1. went
2. follow
3. are dancing
4. plays
