He has to drop____his son at piano lessons.

题目

He has to drop____his son at piano lessons.
A.on B.down C.up D.off 选哪一个,

答案

D.off
Drop off 的意思是开车送他到门前,然后放下孩子.
整句的意思是：他要送孩子去上钢琴课.