Complete the conversation using if, when and unless or the correct form of the
verbs in brackets. Then listen and check.

1. They offered me a cup of tea.
A cup of tea was offered to me.
I was offered a cup of tea.
2. Students take examinations at the end of each term.
Examinations are taken at the end of each term ( by students).
3. The waiter will serve you breakfast in five minutes.
Your breakfast will be served in five minutes (by the waiter).
4. We have just sent for the doctor.
The doctor has just been sent for.
5. The lights went out when they were serving the meal.
The lights went out when the meal was being served.
6. The police were following him until he got to the office.
He was being followed by the police until he got to the office
7. They haven’t brought back my skates.
My skates haven’t been brought back (by them).
8. They are repairing the clock now.
 The clock is being repaired by them now.
9. He had interrupted me.
I  had been interrupted by him.
10. I will have read this book by 10 o’clock tomorrow.
  This book will have been read by me by 10 o’clock tomorrow.

Robots
 The era of robots is approaching. It’s the result of scientific-technical progress. These mechanical agents were created to help people with hazardous work and daily chores. And, indeed, they are capable of doing many things. They can perform any operations, according to the program installed in them. For example, they can help with the laundry, do preparatory work for cooking meals, answer the phone, pick up objects, and even deal with radioactive substances. If we think over this issue, we will realize that we have already robots at our houses. They don’t only come in the shape of an electronic man, they are also regarded as automatic machines for performing various work. Most household appliances are like robots: a dishwasher, a washing machine, a clothes dryer, a microwave, a blender, a vacuum-cleaner, etc. These intelligent machines help us on everyday basis. They have significantly changed our life to the better. Speaking of realistic robots with two hands, two legs and a head with built-in computer, these creatures might be very useful in the future. Perhaps, every house will have at least one robot to provide help with a repetitive, boring work. Other than that, robots can be exploited to do the most difficult and dangerous things. They are already sent to explore other planets or to explore deep underwater. They are used in factories to build cars and other electronics. It seems that the only way we can get such things done is to entrust them to robots. In my opinion, the future of scientific progress is impossible without them. I’m sure that humanoid robots with Artificial Intelligence will be used by new advanced generations.