Question

【题目】The house prices have gone down, but I doubt ________ they will remain so.

A. that B. what

C. why D. whether

Answer 1

【答案】D

【解析】考查宾语从句连接词。句意：房价已经下降了，但是我怀疑它是否（whether）会保持下去。D项符合语境。