Question

【题目】I never doubt I am enough clever.

A. that B. whether C. what D. if

Answer 1

【答案】A

【解析】句意：我从不怀疑我足够聪明。A. that宾语从句是陈述句，用that引导；B. whether是否；C. what什么；D. if是否，如果。本句宾语从句是陈述句，故用that引导，故选A。