1) I know that last changes to previous but what does past transform to for this example:
Direct Speech: Some strange things happened during the last/past year.
Reported Speech: On October 25, 1842, he said that some strange things had happened during the previous/(?) year.
I can change "the past year" with "the previous 12 months". Is there a better choice?
2) I do not want to open a new topic. This is another question I have.
Text from 1881: "The two inventors are said to have increased the stability of their machine."
I made an attempt to convert the sentence above to, I do not know how to call this because it does not look to be pure reported speech, but I am not sure especially about "to have increased". Does its form change or not.
In 1881, the two inventors were said to have increased the stability of their machine.