29. C (A week = seven days)
30. D (Dựa vào câu: I had been to the seaside several times, but this was the first time for my friend)
31. D (It was fine = It was nice)
32. A (Dựa vào câu: We made the journey in a car)
33. B (Dựa vào câu: We reached the seaside at noon ⇒ buổi trưa = 12 o'clock: 12 giờ)