Which word in the sentence does the underlined phrase explain? the house, a historic landmark, was more than 100 years old. a. years b. house c. old d. than

Idon't know which one from these two forms is correct! "he believed that the technology of the future would allow robots to do the same tasks as a human." or "he believed that the technology of the future would have allowed robots to do the same tasks as a human. , it's ! i need your !