Các câu sau đúng hay sai , nếu sai thì sửa lại cho đúng. 1. Tom arrived last week. 2. Have you seen John last week ? 3. I have finished my work. 4. I have finishwd my work at 2o'clock 5. When have you finished your work ? 6. George has left school three years ago. 7. " Where's Ann?" - " She's gone to the cinema." 8. Napoleon Bonaparte has died in 1821. 9. I haven't seen you at the party on Saturday. 10. The weather has been very bad last week.