Question

【题目】I really doubt _____ he would ask her to marry him in public.

A. that B. whether

C. how D. that if

Answer 1

【答案】B

【解析】考查宾语从句连接词。句意：我真怀疑他是否会当众向她求婚。根据前面的doubt可推知，空格处表示“是否”，故选B。