In the lesson, I noticed that my friend was sleeping. DURING I noticed that my friend was asleep __________________________________.

_____ possible, she began to think of ways to use the engine to solve mathematical problems.

We were at the dinner table when the phone rang. HAVING The phone rang ______________________ _____________ dinner.

_____ she was young, her mother wanted her to study mathematics.

Ada Lovelace was born in London, in 1815 She was the first computer programmer more than 130 years _____ modern computers arrived.

They said the name of the winner and we immediately cheered. AS We cheered _________________________ ______________ the name of the winner.

This is why people say she was the first programmer. She continued to work with Babbage_____ her death at the age of thirty-seven.

He spoke to us after his meeting. BEFORE  He didn’t speak to us_____________

She travelled after she graduated from university. UNTIL She ______________________________ she graduated from university.

_____ the age of seventeen, she was an excellent mathematician.

At ten o’clock, all the scientists were in the lab. BY All the scientists were in the lab ________ __________________________.

_____ she was at a party, she met Charles Babbage, whose invention was the first simple computer. She became fascinated by the machine, which he called the Analytical Engine.