A. EIGHTEEN B. SEVENTEEN C. SIXTEEN D. SIXTYCÂU 35
![36. - [Năm 2021] Đề thi Giữa kì 1 Tiếng Anh lớp 11 có ma trận chi tiết (17 đề)](https://www.traloihay.net/traloihay/question/figures/2022/03_05/622385b91c7a4.webp?v=20220420142246 "A. EIGHTEEN B. SEVENTEEN C. SIXTEEN D. SIXTYCÂU 35")
36. He became successful as a professional writer at the age of 20.A. He did not succeed as a professional writer until he was 20.B. He did not write professionally until he succeeded at the age of 20.C. He succeeded as a professional writer until he was 20.D. He wrote professionally until he became successful at the age of 20.