Номер 3 4 5!!!:)заранее спасибо:)

you use a computer 3/Computer skills c)the ability to use a computer 4/register d) to add the most recent information to something 5.log on e) a world on the Internet on a computer 6.upload f) to move something from a small computer to a computer network. 2) choose the correct words 1.Phone me when you get in/at after school. 2/Where do we get off/up the bus? 3. I took /got on the wrong train. 4.What time did you get at to school this morning? 5. Our plane got/took off late. 6.I"m going to make/take up sailing. 3)complete the sentences with since or for. 1. You haven"t sent me an e-mail......... Christmas 3.we haven"t updated our blog ........ ages 4.we"ve had a computer at home......last year. 5. Our computer ...... has been broken ..... two weeks. 6. You"ve been on the computer nine o"clock this morning. 7/we haven"t had any visitors to our blog....last month 8.My brother has been on the phone ... an hour. Write truse sentences.Use the Present PEtfect. Example пример Be/a student at my school/for I"ve been a student at my school for three years. 1.not see/my best friend /since 2.Live/in my house/for 3.have/this English book /for 4.not /have a party/since 5.not/buy /a CD /for 6.know /my best friends /since с обьяснением прошу(