Simple Past Past Perfect action taking place before a certain time in the past action in the past taking place once, never or several times actions in the past taking place one after the other sometimes interchangeable with past perfect progressive action in the past taking place in the middle of another action puts emphasis only on the fact (not the duration or course of the action) Questions in Past Perfect Simple Complete the questions in Past Perfect Simple. 1. 2. 3. 4. 5. 6. 7. 8. 9. (what