Решить 6 класс комарова учеббник 87 стран номер 2

1i. some blind and partially sighted people  use  (present simple, active)  computer-based technology  to gain (инфинитив)  access to printed information. 2. in 1997, a new technology  emerged  (past simple, active)  that  brought  (past simple, active)   digital sound and video into homes over the world. 3. since 2006 another revolution with the introduction ofblu-ray discs  has taken  (present perfect, active)  place. 4. users  will  be  (future simple, active)  able to connect (инфинитив)  to the internet via wi-fi. 5. minicomputers  are becoming  (present continuous, active)  less  popular as microcomputers improve. 6. we  have been solving  (present perfect continuous, active)  the problem since  1993. 7. up to this point we  have been discussing  (present perfect continuous, active)  information retrieval in genera! terms. 8. two keys  are  usually  employed  (present simple, passive), one to encode (инфинитив)  and the other to decode (инфинитив) the information. 9. the separate elements of the building  have been manufactured  (present perfect, passive)  at different factories. 10. computer security techniques  are being developed  (present continuous, passive)  to protect (инфинитив)  single computers from accidental or intentional invasion of data   by unauthorized individuals. ii. science  is  (present simple)  the means by which the hole of our civilization  is  rapidly  being transformed  (present continuous, passive). 12. the new device  will have been tested  (future perfect, passive)  before the chief engineer comes.***************************************** . 2 sms  was created   (past simple, passive)  during the late 1980s  to work   (инфинитив)  with a digital technology  called   (причастие ii)  gsm (global system for mobile communications), which  is   (present simple)  the basis for most modem cell phones. the norwegian engineers who  were inventing   (past continuous active)  it  wanted   (past simple active)  a very simple messaging system that  worked   (past simple active)  when users' mobile phones  were  turned off   (past simple passive)  or out of signal range. most sources  agree   (present simple active)  that the first sms message  was sent  (past simple passive)  in the uk in 1992.  as sms  was born  (past simple passive)  in europe, it  is  (present simple)  not surprising that it  took   (past simple active)  a little longer  to make   (инфинитив)  its way to the united  states. even today it  is   (present simple)  much  more popular in euгоре. a july 2005 study  found   (past simple active)  that 37  percent of u.s. mobile phone owners  had sent   (past perfect active)  or  received  (past perfect active)  at least one text message in the previous month.

Exercise 1 i. some blind and partially sighted people use  (present simple active)  computer-based technology  to gain access to printed information. 2. in 1997, a new technology emerged  (past simple active)  that  brought digital sound and video into homes over the world. 3. since 2006 another revolution with the introduction ofblu-ray discs has taken  (present perfect simple active)  place. 4. users will  be  (future simple active)  able to connect to the internet via wi-fi. 5. minicomputers are becoming  (present continuous active)  less  popular as microcomputers improve. 6. we have been solving  (present perfect continuous active)  the problem since  1993. 7. up to this point we have been discussing  (present perfect continuous active)  information retrieval in genera! terms. 8. two keys are usually employed (present simple passive), one to encode and the other to decode the information. 9. the separate elements of the building have been manufactured  (present perfect simple  passive)  at different factories. 10. computer security techniques are being developed  (present continuous passive)  to protect single computers from accidental or intentional invasion of data  by unauthorized individuals. ii. science is  (present form of 'to be')  the means by which the hole of our civilization is rapidly being transformed (present continuous passive). 12. the new device will have been tested  (future simple passive)  before the chief engineer comes. exercise 2 sms was created  (past simple passive)  during the late 1980s to work  (indefinite form)  with a digital technology called  (present simple passive)  gsm (global system for mobile communications), which is  (present form of 'to be')  the basis for most modem cell phones. the norwegian engineers who were inventing  (past continuous active)  it wanted  (past simple active)  a very simple messaging system that worked  (past simple active)  when users' mobile phones were  turned off  (past simple passive)  or out of signal range. most sources agree  (present simple active)  that the first sms message was sent  (past simple passive)  in the uk in 1992.  as sms was born  (past simple passive)  in europe, it is  (present form of 'to be')  not surprising that it took  (past simple active)  a little longer to make  (indefinite form)  its way to the united  states. even today it is  (present form of 'to be')  much  more popular in euгоре. a july 2005 study found  (past simple active)  that 37  percent of u.8. mobile phone owners had sent  (past perfect active)  or received  (past perfect active)  at least one text message in the previous month.