4.    While Bob and Helen were waiting for the bus it started to rain.

5.    While Stella was talking to her boyfriend the waitress prepared them an exotic drink.

6.    At 5 o’clock, Paul was leaving his office and Anna was speaking on her mobile phone.

7.    At 10 am Laura was giving a speech to her employees at her office.

8.    While Sue was sitting under a tree in the park her little cat was observing her.

9.    When Linda was having breakfast the doorbell rang.

10.    Rob and Liz were jogging in the park when I saw them.

11.    Frank and Sandra had a cup of coffee while they were watching the sun go down.

12.    When I went into the café Lana was serving food and drinks to the customers.

13.  While Tina was looking at a dress her husband was holding a pile of packets.

14.  At 11 am Tim and Bella were walking in the town centre.

15.  At 12:30 my sister was sitting on a bench in the park reading the newspaper.

16.  Helen was combing her hair when mum called her for dinner.

17.  Paul listened to Amanda while she was playing the piano.

18.  Lucy was standing on platform 2 when her train arrived at the station.

19.  Anna fell asleep while she was lying on her hammock.

20.  When Susan was coming back from the shops her motorbike broke down.

21.  The three girls reached an agreement after talking for over two hours.