Cần đáp án, k cần giải thích | Gấp lắm ạ!! 37. The.......................of your letter is pleasant, sincere, and straightforward. A. a voice B. melody C. speech D. tone 38. The.......................is the mixture of gases that surrounds any planet or star. A. atmosphere B. air C. cloud D. sky 39. ................at these lectures is very important to us. A. Attendance B. Suspicion C. Consideration D. Attention 40. Language is not necessarily the private.........................of those who use it. A. job B. work C. career D. property