你说taken吗?因为这里不是从句,而是定语,只能是done.想用be done的话,be作为一个谓语动词,必须属于一个句子,那么就只能用从句,如：
with a great weight that is taken off her mind she passed all the tests successfully.
换句话说,这里你可以学到如何减少从句使用的办法,不是把定语从句里的谓语动词改成done就是doing.
再给你举几个例子：
the girl who wears a cap is my sister.
the girl wearing a cap is my sister.
the painting which is drawn by my teacher is amazing.
the painting drawn by my teacher is amazing.
作为一个地道的英语使用者,一定要尽量减少口语中从句的使用,只有万不得已的情况下才使用,如句子成分太多,句子太长,在最主要的一级结构使用从句,其他部分都变成定语形式.