题目内容

I don't know what I should do to help him.
A. how to do           B. what to do         C. what to do it
B

试题分析：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
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