Choose the best answer to complete the sentence below.
I have been learning English _______ I was twenty years old.
till
Cấu trúc: S + have/ has + Ved/ V3 since + S + Ved/ V2
Cấu trúc: S + have/ has + Ved/ V3 since + S + Ved/ V2
=> I have been learning English since I was twenty years old.
Tạm dịch: Tôi đã học tiếng Anh kể từ khi tôi hai mươi tuổi.
Đáp án : A