◎ 题干
At first, I found ____ very hard to learn English by myself.  
[     ]
A. it        
B. it's        
C. that          
D. that's
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“At first, I found ____ very hard to learn English by myself. [ ]A. it B. it'sC. thatD. that's…”主要考查了你对  【it的用法】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。