Smith went abroad last year. ________ abroad before.
A. He had been never
B. He had never been
C. He never went
D. He went never
Câu trả lời là: B là đáp án đúng
Công thức nguyên hàm và tích phân
Smith went abroad last year. ________ abroad before.
A. He had been never
B. He had never been
C. He never went
D. He went never
Câu trả lời là: B là đáp án đúng