EXERCISE 2. HÃY CHO BIẾT TỪ ĐỒNG NGHĨA HOẶC GẦN NGHĨA, TỪ TRÁI NGHĨA C...

8. When I heard the telephone ring, I answered it immediately.A. On hear the phone rang, I answered it immediately.B. On hear the phone ring, I answered it immediately.C. On hearing the phone ring, I answered it immediately.D. On hearing rang, I answered the phone immediately.