Complete the sentences using the correct forms of the words in the box.

activate                       artificial intelligence                  application                               virtual

1. In the future, we might see more ___________ of AI in every aspect of life.

2. Websites use ___________ to learn about users' shopping preferences and recommend products or services.

3. It is quite simple to ___________ this robot and ask it to perform some tasks.

4. Computer software is used by travel agents to create ___________ tours of popular destinations.