Tom received a letter [ ] by his parents which was filled with love.A;was written B;writing C;written D;was writing必须有理由
问题描述：
Tom received a letter [ ] by his parents which was filled with love.
A;was written B;writing C;written D;was writing
必须有理由
答
c
因为是已经发生了的事。
答
C
过去分词做定语
答
c 表示过去发生的 已经写好的信
答
C
written 修饰 letter
一封信,什么信? 她父母写的信
答
C
过去分词做定语