The books I have read

网友回答

填 are marked.这句子中,I have read是修饰the books的定语从句,真正的主语是the books,由于有被动意味,所以谓语用被动形式,故填are marked.
======以下答案可供参考======
供参考答案1:
are marked
供参考答案2:
are marked
供参考答案3:
are marked
因为这里的I have read是the books的定语从句，所以，mark在这句话中是谓语动词。而books和mark(做标记)的关系是被动，并且books是复数，所以用 are marked.
供参考答案4:
填marked，做定语表被动，保证对！！！