The items exhibited are well worth ______, and attracted large crowds of visitors in the past few days.

A. seeing    B. to be seen

为什么标准答案是B呢？我理解是A are worth seeing 主动形式表被动含义呀？

    【答】A. seeing 是正确的答案，B. to be seen 是错误的答案。请看以下的正误句：

【正确】The car isn’t worth reparing. 这辆汽车不值得修了。

【错误】The car isn’t worth reparing it. 

【错误】The car isn’t worth to be repared. 

(以上例句摘自《牛津英语用法指南》第四版634.3节)