Сделайте пожалуйста с третьего упражнения

ex. 3

1. was walking

2. were planning

3. was taking

4. were working

5. were you doing

6. wasn't playing

ex. 4

1. were doing, came

2. were reading, was sleeping

3. looked, saw

4. was reading, started

ex. 5

1. The event took place on 12th June.

2. The event was planned by a group of 16 year old students from the local high school.

3. Over 500 people took part in the event.