问题
选择题
I don't know what I should do to help him.
A. how to do B. what to do C. what to do it
答案
答案：B
题目分析：句意：我不知道我能帮助他做些什么？分析：how to do错误选项（正确形式应为how to do it ); what to do 做什么；what to do it错误选项（正确形式应为what to do ). 考查宾语从句的特殊形式，从句中的主语和助动词省略，可将其转换为小品词to.故选 B
