HÃY CHỌN MỘT CÂU TRẢ LỜI ĐÚNG NHẤT

13. - DE THI TUYEN TIENG ANH 12 NHE
DE THI TUYEN TIENG ANH 12 NHE

13. If I_______ so busy yesterday, I would have visited you.

A. were not B. wasn’t C. aren’t D. hadn’t been