She complains that she ………………………….. headaches.
A. has frequently had
B. has been frequently
C. has frequently
D. had frequently been had
Câu trả lời là: A là đáp án đúng
Công thức nguyên hàm và tích phân
She complains that she ………………………….. headaches.
A. has frequently had
B. has been frequently
C. has frequently
D. had frequently been had
Câu trả lời là: A là đáp án đúng