The Iroquois were primarily planters, but supplementing their cultivation of maize, squash, and beans with fishing and hunting.
but supplementing
and had supplemented
and even though they supplemented
although they supplemented
but with supplementing
but 后面要+句子所以呢AE错误
句意应该是表转折,排除了B
最后B中的and感觉没有跟她平行的东西 所以选了C
所以B去掉and对吗?
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