[求助]大全379

1.        In good years, the patchwork of green fields that surround the laceName>San JoaquinlaceName> laceType>ValleylaceType> town bustles with farm workers, many of them in the area just for the season.

(A) surround the laceName>San JoaquinlaceName> laceType>ValleylaceType> town bustles with farm workers, many of them

(B) surrounds the laceName>San JoaquinlaceName> Valley town bustles with farm workers, many of whom are

(C) surround the San Joaquin Valley town bustles with farm workers, many of who are

(D) surround the San Joaquin Valley town bustle with farm workers, many of which（A）

(E) surrounds the San Joaquin Valley town bustles with farm workers, many are

请问many of them in the area just for the season做什么成份？我觉得应该是many of whom are in the area just for the season.

谢谢，OasisWater.

但是你注意到了吗，many of them 后没有are, 不能构成定语从句，难道是独立主格？

能解释一下为什么？