769. The Iroquois were primarily planters, but supplementing their cultivation of maize, squash, and beans with fishing and hunting. (A) but supplementing (B) and had supplemented (C) and even though they supplemented (D) although they supplemented (E) but with supplementing 如果把A选项改为 (A) although supplementing 它会比C更好吗? 我觉得这个问题关系到下一代幸福(SBBI语)。