Complete the sentences with the given modal verbs( one is extra) may!needn't havelshoudn't have had not have\might havelmust not have
1. You ___eaten so many crisps. Now you've got a stomach ache.
2. Helen gone to the gym, but I'm not sure.
3. Gregory wasn't at school yesterday, because he go to the doctor
4. She looks so tired. Surely, sheslept well last night.
5. You ___brought anything for dessert;I made a big fruit salad!
6. It is permitted,they＿ play here.

1. What kind of communication problems can one face in real life?

D. Psychologists say that social networking sites can have serious disadvantages. It is hard for children to have real conversations and make friends. They become selfish personalities and lose interest in real life. Parents spend less time with their children and all members of the family spend less time with each other because they are using the Internet instead of communicating in person.

2. What are different opinions about social networks?

A. The popularity of social networking sites such as Vkon-takte, Facebook, MySpace, and Classmates has risen more than four times from 2005 to 2009. Many users say these sites are good for our society, but others are sure that there are more dangers in them than benefits. Your attitude to such websites depends on your age, job, interests and way of life.

3. Why do some people call social networking sites “time eaters”?

C. Social networking sites make people spend more time online and less time communicating face-to-face. The sites have many time-wasting activities. You stay online longer than you planned and do nothing serious or important. Experts say that teenagers spend about nine hours every week on social networking sites.

4. What are the hidden dangers?

5. What kind of new communication opportunities are provided by social networks?

B. Social networks promote communication with friends and family, they give people necessary and useful computer skills and teach them to express their ideas in a clear way. Another thing is that the sites let people create new relationships and reconnect with old friends. In every way, more communication, even online, makes connections stronger.

6. What are the new prospects in education?

F. New research shows that social networking sites can be used in schools. Teachers should find ways to use them in class. It would help students to learn how to get information from Internet resources and share it with classmates. Students would also be able to express themselves creatively and present themselves better.

7. What is a fact about worrying time statistics?

E. Internet users spend most of their time on social networks and blogs. Users in the USA spend about five and a half hours every month on their favourite site. And the number is growing. Russians spend 6.6 hours monthly on social networking sites. It is more than people in any other country. For example, in Europe it is 3.7 hours a month.

The RSC Energia Space Museum contains incredible records of Russian space travel history. In the museum you can see and do many things. You can touch the capsule in which Yuri Gagarin became the world's first astronaut, and see the spacecraft "Sunrise 2". If you want to know what it's like to be in space, then this is your chance to find out. When you get into the Soyuz spacecraft launch module, you can control many important control knobs. You will feel like a real astronaut floating in space, ready to re-enter the Earth's atmosphere