The workers believe the assembly hall _____ the curtain need to be changed _____ rebuilding.
A．which; deserve B．of which; is deserved
C．whose; deserves D．of which; deserves
D
【详解】
考查定语从句和主动表达被动。句意：工人们认为窗帘需要更换的礼堂应当重建。根据定语从句中，whose sth=the sth of which/whom=of which/whom the sth（某人/某物的…）可知，因为curtain前面有定冠词the，故用第一空of which the sth的结构；由believe判断本句为一般现在时，deserve的主语是the assembly hall，故用deserves。deserve doing “值得做某事”主动表达被动。故选D项。