HÃY CHỌN MỘT CÂU TRẢ LỜI ĐÚNG NHẤT

155. _______________, I would have learned how to use a computer.

A. If I could have been able to go to school as a child

B. If I been able to school as a child

C. Had I been able to school as a child

D. Unless I had been able to school as a child.