Помогите пожалуйста Write one word in each gap Ages, eras and wars will always be defined (1).they are...

1. after
2. had
3. Since
4. to
5. will
6. By
7. have
8. be
9. been
10. at
11. in
12. will
13. at

Certainly! Here is the text with the appropriate words filled in:

Ages, eras, and wars will always be defined (1) after they are over, or at least well after they (2) have started. (3) In the year 1914, for example, no one said: "Tomorrow I'm going (4) to go and fight in the First World War." Why not? Because it wasn't generally called the First World War until the Second World War had started. Similarly, no one ever said: "Next year (5) will be the start of the Industrial Revolution." The era now known as the Industrial Revolution only started being called that once it was well under way.

(6) By the time we are old, we will all (7) have experienced enormous technological advances. We might even (8) be walking around with computer chips implanted in our bodies, or perhaps computer chip technology will have (9) been replaced by even more advanced technology. There's talk (10) at the moment that human skin itself might make an excellent electronic circuit board. We can all make predictions, but nobody knows for sure. And nobody knows what the era we will live in (11) in the near future will be called by future historians. If we already live in the Computer Age or the Information Age, as some people suggest the present-day era (12) might be referred to by future historians, then who knows what era we're just (13) at the beginning of right now?

This passage discusses how significant periods in history are often only named and defined after the fact. It illustrates this by giving examples such as the First World War and the Industrial Revolution. The text also contemplates future technological advancements and how future historians might define the current era we live in.