1. Поставте іменники у множину: mosquito ,potato ,tomato ,man ,veto, cherry ,pony, bus ,kiss ,glass ,tax, box ,bench ,peach ,crash, cloth ,
death ,sloth, path ,a cake ,a town ,an apple ,a shoe ,an ice cream.

Complete each sentence with two to five words, including the word in bold. 
1) When did Monica get married? 
(since):  How long is it since she got married?
2) It  was the first time she had visited the National Gallery.
(never):  She has never visited the National Gallery before.
3) Jessica didn't start cooking until after the children had fallen asleep.
(before): Jessica waited until the children had fallen asleep and after that she started cooking.
4) The last time i went to the theatre was months ago.
(have): I haven't visited the theatre for months. 
5) It's two months since she called me. 
(has) : She hasn't been calling  me for two months.
6) The president waited until all the reporters had arrived before he made his statement. 
(making): The president didn't make his statement until all the reporters had arrived.
7) We haven't played chess for a month.
(since): It's a month already since we have played chess.
8) She  waited until Tom had left before she began packing.
(after): She didn't begin packing while Tom was here, and began doing that straight  after he left.

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.