Sure! Here are the suitable words filled in for each gap:

1. By 2030, the way people **communicate** with each other will be much different from nowadays.
2. This machine can translate comments and private **messages** into many languages.
3. Sending voice messages is really **convenient** because people don’t have to type.
4. Robots can **perform** many human tasks and interact with other users in reality.
5. Webcams start to appear on televisions and are standard on many **laptops**.
6. Do you think that these ways of communication will still be **popular** in the next 10 years?
7. One problem of video **conference** is that you must stay in one place for the duration of the conference.
8. Very few people will send letters and **postcards** to each other by the year 2050.

Let me know if you need anything else!