问题补充：
- Why did he make no to be understood or liked?
- He didn care what others think of him.
A. balance
B. risk
C. reply
D. effort
答案：
A. balance
B. risk
C. reply
(答案→)D. effort
解析：句意：——为什么他不努力让人理解他或喜欢他？——他不在乎别人怎么看他A. balance 平衡； B. risk 冒险；C. reply 答复； D. effort努力。make effort to do sth. 努力做某事。根据He didn care what others think of him。可知他不在乎别人对他的看法，因此不努力让人喜欢他。故选D。
