30 ! 6. correct the mistakes if any. 1. they are discussing the problem for hours, but has not solved it yet. 2. somebody has been playing tennis since 2 o’clock. 3. is it still raining? no, it have stopped. 4. john has been winning the championship two times. 5. the boys have fished for 3 hours. 6. how many books have you written? 7. mike has invited many friends to his birthday party. 8. he has been hating oranges since his childhood. 9. they have been taken the dog for a walk. 10. irene has left for the airport.

Present perfect or past perfect?

a) I phoned Mr. Williams to find out if Pat (HAD goNE) away. He was not sure. 
b) Wait, I'll go and see if she (HAS goNE) out. 2. a) Look at this house. I 
(HAVE liveD) here for 12 years and I am moving to another one next week, b) I 
(HAD liveD) in a small cottage for 12 years before my family moved to town. 
Jack (HAS playED) tennis three times this week. He said he (HAD not playED) tennis a week before. 4. Alan (HAS seeN) a lot of Alexandra recently. 5. I often 
(HAS wonderED) how he earns his living. 6. She told me she (HAD workED) in England  before. 7. When I arrived at the country house I realized I (HAVE losT) the 
keys. 8. "HASN'T John (telephoneD) yet?" she asked entering the house, but her 
brother said he didn't know if John (HAD telephoneD). 

Напишу о Гарри Поттере. Что-то можешь дополнить сам. :)
Harry Potter.
Harry Potter - one of the famous film ever. I think, everyone know about this movie. But, if you don`t, i want to tell to you about this.This film about a little boy. A little magical boy. His mother and father died and he lived with his uncle, aunt and little evil and stupid cousin. But when he celebrated 11, he received a letter from Hogwarts. At first time his uncle hid it, but then Harry got it. And and he went to Hogwarts. but none. He helped the giant Hagrid. In Hogwarts he found many good friends, he found his love and family. He won Volan de Mort, fought against evil, was an good student, a great player skvidichche. And he became a legend, that will always be in our hearts