1. СРОЧНО!!!!
2.   Insert the verb in the right tense form (The Present Perfect tense or the Past Simple Tense.
3. I (to write) my first program for a computer when I (to be) thirteen years old.
4. It (to change) our lives and it is changing them again, because now the computers are coming together to make a new system.
5. I'm very happy that I will be a part of this strange new time. I (to feel) this happiness and excitement before.
6. One day in 1972, when I (to be) sixteen and he was nineteen, he (to show) me something that he was reading.
7. After I (to write) that first program at the age of thirteen, my friend Paul Allen and I (to spend) a lot of time using computers.

I wrote my first computer program when I was thirteen years old.

It's to change our lives, and it's changing them again, because now computers are coming together to create a new system.

I am very happy to be a part of this strange new time. I have to feel this happiness and excitement before.

One day in 1972, when I was sixteen and he was nineteen, he was showing me something he was reading.

After I wrote this first program at the age of thirteen, my friend Paul Allen and I spent a lot of time on computers.