1. the plane leaves/has left at 9 am tomorrow. 2. the rescue workers are searching/search through the rubble for survivors. 3. mark has found/is finding a new freelance job. 4. the photographer has been taking/has taken pictures for three hours. 5. they travelled/were travelling to chile last year. 6. it rained while they were hiking/hiked through the forest. 7. he was climbing/climbed the mountain when he slipped/was slipping. 8. tom often is going/goes camping at the weekend. 9. the miners dug/have been digging in the old copper mine all day. 10. i was doing my homework while tim and sally watched/were watching tv.