Complete the reading passage. Write ONE suitable word in each blank.

In about fifty years, people might apparently realise that the technological limitations of communication will nearly be eradicated. As for the interaction between humans, thanks to advancements of virtual reality, people will be (1) ___________ to communicate with each other more authentically. Virtual images will not be restricted in smartphone screens any longer, and their 4-D self-images can talk and move lively instead. What’s more, businessmen will attend virtual (2) ___________ from home through small virtual reality glasses. They will discuss with (3) ___________ another in a multi-dimensional meeting room, nothing out of line with what we do today. Moreover, the human-machine communication will step up (4) ___________ another level. Conversational AI robots, surpassing current chatbot versions, will be the reliable companions in many aspects of life. Intelligent human-like virtual assistants filled with various remarkable features can perform many (5) ___________, such as searching for information quickly, controlling the operation of household appliances as well as making wise plans if humans need.