【题目】 What they are arguing over the meeting is _______ they should invest so much money in that time-consuming project, as they worry about the losing money.
A . what B. that C. whether D. how
在线课程【答案】 C
【解析】
试题分析： 考查表语从句；句意：会议上他们所争论的是是否要在这个长期的项目上投入这么多的钱，因为他们担心会有损失。Whether引导表语从句，故选C项。