英语单选 it's custom that the last person __ the company should close all the doors

问题描述:

英语单选 it's custom that the last person __ the company should close all the doors
A.leaved B.leaves C.to leave D.leaving

C
分词修饰the last person
翻译为:最后一个离开公司的人关上所有的门是常理(习惯).主句是it's custom that表示按照习惯/常理 如何如何。。。从句中 the last person 是从句主语 to leave the company是主语修饰语