客服

购物车

APP下载

扫码下载金标尺教师APP

回顶部

搜题
APP下载

扫码下载金标尺教师APP

单选题 14. Although he thought he was helping us prepare the dinner, he was actually ______ the way.

A

in

B

by

C

off

D

on

正确答案 :A