HÃY CHỌN MỘT CÂU TRẢ LỜI ĐÚNG NHẤT (A, B, C HOẶC D) CHO MỖI CÂU TƯƠNG...

245. The lesson was difficult ……us, but the teacher was capable …..making us understand it

thoroughly.

A) at/about B) in/with C) to/of D) of/for