1. When I (walk) ___________ to work I saw him. 2. Why did you avoid (meet) ________ him at the party last night? 3. By the time I arrived at the station the train (leave) ________ already. 4. James (not attend) ________ our wedding party last year. 5. We hoped (help) __________ by the teacher. 6. Would you mind (lend) ___________ me your pen? 7. They decided (not sell) ___________ their old house. 8. She managed (open)__________ the door. 9. Do you mind (not use) _________ my phone? 10. When he (drive) __________ to work he had an accident. 11. Before she went to the cinema she (buy) ________ the ticket. 12. William (not write) ___________ to me two weeks ago. 13. By the time you came back we (clean) _________ your room. giúp em vs ạ em đang gấp em cảm ơn