Проверьте пожалуйста правильно ли я все написала

Заместо we were making the 12,000 mile trip back to my home,надо we have мейд the 12.000 miles trip back to my home.Заместо every first modern technologies were met with terror and suspicion,надобно every first modern technology was met with terror and suspicion.Заместо they were convinced they the first built underground,and then above it the city,надо they were convinced firstly was built underground and then above it was built the city .Заместо they were shocked to learn that the children didn't look after their elders,надобно they were shocked to learn that children don't look after their elders.