I. Chia động từ ở thì quá khứ tiếp diễn 1. I ___________________down the street when it begin to rain (go) 2. At this time last year, I ___________________an English course (attend) 3. Jim ________________ under the tree when he heard an explosion (stand) 4. The boy fell and hurt himself while he _________________ a bicycle (ride) 5. When we met them last year, they______________ in Santiago (live) 6. The tourist lost his camera while he________________ around the city (walk) 7. The lorry _______________ very fast when it hit our car (go) 8. While I ____________________in my room, my roommate ___________________ a party in the other room (study/ have) 9. Mary and I___________________ the house when the telephone rang (just leave) 10. We __________________ in the café when they saw us (sit)