C Expand the notes into sentences. Use the Present Perfect Simple or the Present Perfect Progressive + for / since, where needed.
1. Jess / not/start/ driving lessons / yet
2. Olga / try / contact / Mary / two days
3. I/know / Monica /she/be/ten
4. Jack / learn/Spanish / two years
5. Debbie's parents / never / be / China
6. My cousin / work / as an accountant / ten years
7. Brian / be / unemployed / last year
8. They/ wait/bussix o'clock in the morning

1. Jess hasn’t started driving lessons yet.
2. Olga has been trying to contact Marie for two days.
3. I have been knowing Monica since she was 10.
4. Jack has been learning Spanish for two years.
5. Debbie’s parents have never been to China.
6. My cousin has been working as an accountant for 10 years.
7. Brian has been unemployed since last year.
8. They have been waiting for a bus since 6 o’clock in the morning.

1. Jess hasn’t started driving lessons yet.

2. Olga has been trying to contact Marie for two days.

3. I have known Monica since she was 10.

4. Jack has been learning Spanish for two years.

5. Debbie’s parents have never been to China.

6. My cousin has been working as an accountant for 10 years.

7. Brian has been unemployed since last year.

8. They have been waiting for a bus since 6 o’clock in the morning.

Essay: "computers: a blessing or a curse? " computers have become an essential thing in our lives.  some people appreciate the invention of computers and others do not. most people can't even imagine their lives without the computer. checking the weather on your phone or tablet seems like an everyday thing but just a few years ago it wasn't. it's incredible how far science has gone in this small amount of time.    i personally think that computer is a blessing. a lot of things can be done a lot faster with the invention of computers. for example, computers do extremely hard maths in matters of a second! these machines can even generate incredibly large algorithms those can do impossible things, we thought! computers can store most of the books, films or other culture on their hard-disks which take minimal space in your flat. previously, you had to go to libraries, and now you can just type anything you want to find in the search engine, and you will get it as fast as you possibly can! on the other hand, if you play or work on the computer for too long, your eyes would be hurt and your eyesight would be lowered. moreover, surfing the net always wastes an enormous amount of time, there is a lot of propaganda and adverts everywhere on the internet.that is right, i agree that people mustn't sit in front of the screen for too long or it'd be harmful to your health.to sum up, i think that invention of the computer is a critical moment in our history. for sure, computers have a lot more pros than cons, but you shouldn't spend too much time in front of a computer or it'd be bad for your health, so, despite all the disadvantages that computer has, i'd consider it as a blessing.