I hear that your examinations are next week. You…….very hard at the moment.
A. study
B. are being studied
C. must study
D. must be studying
Câu trả lời là: D là đáp án đúng
Công thức nguyên hàm và tích phân
I hear that your examinations are next week. You…….very hard at the moment.
A. study
B. are being studied
C. must study
D. must be studying
Câu trả lời là: D là đáp án đúng