【1】talk to“和……交谈”，此处对人提问，故用疑问词who，故此处为：Who are you talking to?

【2】know about sth了解某人，the healthy food健康的食物，故此处为：I have known something about the healthy food.

【3】be born诞生，询问时间，用疑问词when，询问某物的诞生，用一般过去时。故此处为：When was the computer born?

【4】play an important role in在……方面，起重要作用。our daily life我们的日常生活，故此处为：Does the computer play an important role in our daily life?

【5】What do you think of sth? 认为某物怎么样？in dangerous places 在危险的地方，in place of代替，故此处为：What do you think of robots that work in dangerous places in place of people?