1. I/work/this office/since/my friend/move/the others
--> I have worked in this office since my friend moved to the others
2. She/not look/door/when/she/leave/office
--> She didn't lock the door when she left the office
3. Train/go through/tunnel/when/it/suddenly/stop
--> The train was going through the tunnel when il suddenly stoped
4. She/wash/hair/when/doorbell/ring
--> She was washing the hair when the doorbell rang
5. John Logie Baird/ invent/television/or/telephone
--> John Logie Baird invented television or telephone?
6. They/cry/when/they/hear/bad news
--> They was crying when they heard bad news
7. cat/lie/on/sofa/when/mouse/come into/room
--> The cat was lying on the sofa when the mouse came into the room
8. Maryan and Lan/been/pen pals/over two years
--> Maryan and Lan have been pen pal for over two years
9. Sandra/work/the company/three years/now
--> Sandra has worked in the company for three years now
10. Liz/not send/us/letter/since/return/USA
--> Liz hasn't sent us a letter since she retuned to USA
11. when/Don/arrive/we/have/coffee
--> When Don arrived, we were having coffee
12. He/break/his leg/when/he/ski
--> He broke his leg when he was skiing
13. What/do/you/this time/yesterday
--> What was you doing this time yesterday?
14. While/Henry/walk/in the moutain/he/see/a bear
--> While Hengry was walking in the mountain, he saw a bear