【石博文】評論
Vicky wishes she could learn all the foreign languages which were taught at school. (Vicky是被教,所以形容詞子句要用被動which were taught)=Vicky wishes she could learn all the foreign languages taught at school. (which were 可以省略)參考來源 http://tw.knowledge.yahoo.com/question/question?qid=1010032603603
【Swards Chang】評論
請問為何是過去式taught
【Pao-Yueh Hsue】評論
過去分詞片語 taught at school = which are taught at school(關係子句)，因此選(C)