Here are five alternatives for each phrase:

Shows:

  1. Displays

  2. Demonstrates

  3. Exhibits

  4. Presents

  5. Illustrates

Advantages:

  1. Benefits

  2. Pros

  3. Merits

  4. Upsides

  5. Strengths

Disadvantages:

  1. Drawbacks

  2. Cons

  3. Downsides

  4. Limitations

  5. Shortcomings

Example:

  1. Instance

  2. Case

  3. Sample

  4. Illustration

  5. Exemplar

People:

  1. Individuals

  2. Persons

  3. Citizens

  4. Population

  5. Humans

Compare:

  1. Contrast

  2. Examine

  3. Assess

  4. Evaluate

  5. Differentiate

Important:

  1. Significant

  2. Crucial

  3. Vital

  4. Essential

  5. Key

In olden days:

  1. In the past

  2. Historically

  3. In ancient times

  4. Long ago

  5. In earlier times

Explore:

  1. Investigate

  2. Discover

  3. Examine

  4. Survey

  5. Probe

In my opinion:

  1. I believe

  2. From my perspective

  3. In my view

  4. As I see it

  5. Personally, I think

Additionally:

  1. Furthermore

  2. Moreover

  3. In addition

  4. Also

  5. Besides