Q29. Choose the most grammatically correct and natural-sounding sentence.English — Sentence and its Types — Question 29 of 170A. I'm a policeman and I usually have to work at Christmas.B. I'm a policeman and I usually have to work by Christmas.C. I'm a policeman and I usually have to work through Christmas.D. I'm a policeman and I usually have to work on Christmas.Practice more English MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →