Sure! Let's go through the questions one by one:
A: Will people go on holiday to the moon? B: I don't think they will in the near future. They will likely visit space stations and learn more about space travel, but commercially available trips to the moon might take longer to develop.
A: Will people drive flying cars? B: I think they will eventually. They are already developing prototypes, and with advancements in technology and infrastructure, flying cars could become common in the next few decades.
A: Will computers talk? B: I believe they will. In fact, they already can to some extent! Voice assistants like Siri and Alexa are just the beginning, and future computers will likely have more advanced conversational capabilities.
A: Will time travel be common? B: I don't think it will be common anytime soon. Although time travel is a fascinating concept and is explored in science fiction, we currently lack the technology and scientific understanding to make it a reality.
A: Will people live in underwater cities? B: I think they might in the future. As population grows and land becomes scarce, scientists and architects are researching sustainable underwater habitats, although this concept is still in its infancy.