Present simple: i take the dog for a walk every day after school
Past simple: i took the dog for a walk yesterday after school
Future simple: i will take the dog for a walk tomorrow after school
Present perfect: i have already taken the dog for a walk after school
Past perfect: after school first i had taken the dog for a walk, then went out with friends
Future perfect : i will have taken the dog for a walk by 7 o'clock
Present continuous: i am taking the dog for a walk at the moment
Past continuous: i was taking the dog for a walk when you phoned
Future continuous: не знаю
Present perfect continuous: : i have been taking the dog for a walk daily after school since i was 7
1) Many people had an opportunity to use computers.
2) There was no doubt that computers solved problems very quickly.
3) Instructions directed the operation of a computer.
4) Computers brought with them both economic and social changes.
5) Computing embraced not only arithmetics, but also computer literacy.
6)It was well known that computers prepared laboratory tests.
7) Those persons were computer literate and thought of buying a new
computer.
8) They received a subscription magazine once a
month.
9) My mother was ill and visited her doctor every other day.
10) Experts knew much about how to prepare programs.
