The letter he had been looking forward to(arrive) at last.

问题描述:

The letter he had been looking forward to(arrive) at last.

was arrivedhe had looking forward to 是修饰the letter 的定语哦,我错了,是arrived为什么主语是the letter, 与arrive 是主动的关系主动关系就应该是arriveing啊这句话可以等价为the letter arrived at last懂了吗