4 Read the rule and the examples. Then find three more examples in the dialogue. O RULES We use can, could and may to ask permission or make a request. We use can and may, but not could, to give permission. 'Can I buy a new phone, Dad?' 'No, you can't.' 'Could I try this dress on?' 'Of course you can.' May I pay by credit card?' 'Yes, you may​

At present mobile phones have become ingrained in our everyday lives and the majority of people can hardly imagine themselves without cell phones. Is it just a tribute to fashion or a necessity of a modern person?
It isn’t a secret that today many people feel quite helpless if they have left their mobile phones at home. First of all cell phones give us an opportunity to keep in touch with people in any place and in any time (it’s especially important for businesspeople). Besides, modern mobile phones are multi-function: they provide access to the Internet, have various games, cameras, memory sticks, etc.
Nevertheless we can’t deny that mobile phones provoke a range of problems. People have started to see each other less frequently. Mobile communication requires quite a lot of money and people have to control the amount of money on their accounts constantly otherwise at the most inappropriate moment they won’t be able to phone the people they need. But the greatest disadvantage of cell phones is certainly their harmful influence on people’s health.
In my opinion at the present time mobile phones are an integral part of life of any person and we can’t stop it. I personally need it everyday for my work and to keep in touch with my friends and relatives, though I’m aware of its deleterious influence on my health. But I try to avoid idle talks on the phone to reduce the influence of harmful radio waves. I try to find the happy mean.

A Mystical Story
This story happened ten years ago in one English village. Mr. and Mrs. Johnson arrived in Clovelly late at night. They came from the USA to spend their holiday in a lovely surrounding. As it was rather late, they decided to stay overnight at a hotel. Next morning, after a short walk Mrs. Johnson realized that she fell in love with this peaceful place. She said she wanted to buy a house in Clovelly and move to England. So, they spent a day looking for a detached house or a mansion. Finally, they’d found one and went to see it with an estate agent. There was a kitchen, a dining room and a living room on the first floor. And, there were three bedrooms upstairs. While Mrs. Johnson was exploring the second floor, she felt a strange cool breeze coming from one room. It was the darkest and the most unpleasant room she’d ever seen. Nevertheless, they decided to buy the house but to renovate the strange bedroom upstairs. The same night they were celebrating their profitable investment at the local pub. Mr. Johnson ordered a bottle of champagne and told the bartender about their new house. The young guy went pale when he heard about that house. He said that nobody had ever wanted to buy it because of its dark past. In fact, the owner of the mansion was murdered in his bedroom. Since then people tell various mystical stories about this place. Moreover, they say that the ghost of the former landlord still dwells there. Mrs. Johnson was terrified. She said she knew there was something wrong with that room. Next day they quickly packed and caught a plane to New York. The Johnsons never came back to Clovelly again