<span>to be was/were been
to have had had
to mean meant meant
to learn learnt learnt
to become became become
to bring brought brought
to know knew known
to think thought thought
to buy bought bought
to play played played
to take took taken
to do did done
to begin began begun
to give gave given
to make made made
to keep kept kept
to get got got
to read read read
to show showed shown
</span>
1.Many people had an opportunity to use computers
2.There was no doubt that computers were solving so problems very quickly
<span>3.Instructions directed the operation of a computer
</span>
<span>2. There is a beautiful picture on the wall.
3. There is a cat in the room.
4.There are children in the garden.
5. There are students in the laboratory.
6. There is a bus near the house.
7. There is an apple under the
tree.
8. There are many pupils in the hall.
9. There are a lot of English books
at her place.
10 There are 7 days in every week and 12 months in every year.</span>
1) played
2) helped
moved
carried
tried
was
was
wanted
waited
arrived
missed
walked
started
started
arrived
were
was
was raining
stayed
watched
listened
finished