Вспомните образование и случаи употребления The Past Simple Tense.

A.Напишите три формы неправильных глаголов: to be;to have;to mean;to learnto become;to bring;to know;to think;to buy;to play;to take;to do;to begin;to give;to give;to make;to keep;to get;to read; to show.
B.Преобразуйте предложения в Past Simple:
1.Many people have an opportunity to use computers
2.There is no doubl that computers solve problems very quickly
3.Instructions direct the operation of a computer 

to be was/were beento have had hadto mean meant meantto learn learnt learntto become became becometo bring brought broughtto know knew knownto think thought thoughtto buy bought boughtto play played playedto take took takento do did doneto begin began begun to give gave givento make made made to keep kept keptto get got gotto read  read readto show showed shown1.Many people had an opportunity to use computers2.There was no doubt that computers were solving so problems very quickly3.Instructions directed the operation of a computer