We ……………….. soccer while you’re swimming at the pool.
A. were playing
B. will have been playing
C. has been playing
D. are going to be playing
Câu trả lời là: B là đáp án đúng
Công thức nguyên hàm và tích phân
We ……………….. soccer while you’re swimming at the pool.
A. were playing
B. will have been playing
C. has been playing
D. are going to be playing
Câu trả lời là: B là đáp án đúng