Do you know who was the last_____the classroom last night?

问题描述:

Do you know who was the last_____the classroom last night?
A.left B.leaving
C.toleave D.had left

A.
谁是昨晚最后离开的人.
who is the last one left.
如他是最后一个离开的.
He is the one who left last.