For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.
5. For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle. A. each a roof of poles and arrowweed B. each a roof of poles and arrowweed that are being C. with each being a roof of poles and arrowweed D. with roofs of poles and arrowweed to be E. with roofs of poles and arrowweed that are 我选了e,虽然觉得with短语没有紧接dewellings有不妥,但不知道ab里的each a +n.是怎么回事?
my choice is A. A. each a roof of poles and arrowweed B. each a roof of poles and arrowweed that are being C. with each being a roof of poles and arrowweed D. with roofs of poles and arrowweed to be E. with roofs of poles and arrowweed that are i think the idiomatic expression for this is either "with roofs of poles and arrowweed supported by posts set..." or "each a roof of poles and arrowweed supported by posts...".