Образуйте степени сравнения прилагательных и наречий

 You shouldn't open the window unless you have to.
 I would travel more if it wasn't so expensive.
 He's thinking of going to Alaska this year.
 They don't deliver the letters themselves. They use a separate delivery service.
 Unfortunately, I wasn't able to complete the task.
 It's a strange taste, but you get used to it.
 There could appear a mistake in your calculations.
 She is studying to become a doctor.
 I broke the ice by speaking to him first.
 We reported our findings to the chairman and he approved.
 It's important to keep an eye on the exchange rate when traveling abroad.
 She donated half her salary to charity.
 Is that your suitcase? - Yes, that is my suitcase.
Who is that? That is the teacher.
 I would like you to make me a copy of that.
 My teacher was born in Japan.
 It's strange that we have the same birthday.
 Could you please pass on the message?

1. He usually helps his parents in the morning.
2. Next week they will give a concert for the war veterans.
3. The day before she visited her ill neighbour.
4. Yesterday at 6 p.m. he was working on a computer.
5.Look! They are playing footbal in the yard.
6. Alice has already fed her parrot.
7. When Jane called her mother she had just left the office.
8.My friend keeps secrets well.
9. In three weeks the pupils will pass exams in Maths.
10. Last Sunday the teacher took his pupils to the forest.
11. While the mother was cooking the cake the daughter was laying the table.
12. Look! The birds have already eaten the bread.
13. The father has just come from work.
14. They had left the city by last Sunday.
15. Sometimes Jesse and Kim make toothbrush holders for selling.
16. She will learn two languages next year.
17. In his childhood Tom wanted to be a driver.
18. The day before at 9 friends were listening to the opera.
19. Don`t trouble me. I`m thinking over my report.
20. I`m sorry. I haven`t learnt the poem yet.
21. When Hilary visited Stephen, he had already got well.
22. He often gives a helping hand to his classmates.
22. Last Saturday the children cleaned the park.
23. The day after tomorrow all the pupils will discuss teenagers` problems.
24. Two years ago the family moved to a new flat.
25.I`m sorry. I`m writing my home composition now.
26.She has never been to London.
27. By last lesson they had done all the task.