1. I like pop music but my brother likes rock music. (different)

⇒ My taste in music is different from my brother's one.

2. Neither Mary not her sister studied arts at school. (either)

⇒ Mary never studied arts at school and her sister didn't, either.

3. I think Vinh acted better than Quang in that play. (as)

⇒ I think Quang didn't act as well as Vinh did in that play.

4. Both Anna and her brother are fond of watching water puppet. (too)

⇒ Anna is fond of watching water puppet and her brother is, too.

5. My hobby is drawing and John's hobby is also drawing. (same)

⇒ My hobby is the same as John's hobby.