She began to play the piano three years ago She has played the piano since three years
Giải thích
Đáp án C
Kiến thức kiểm tra: tense transformation
Sử dụng công thức sau đây:
S + began/ started + V-ing / To V … in + time (May, 1990,…) time (years, month,..) + ago
S + have/has + Ved/3……………..
+since/ for + time
have/has + been + V-ing…….