Little Tim was ill.His mother insisted ______A on his sending to bed B on him to be sent to bedC on his being sent to bed D his being send to bed

Little Tim was ill.His mother insisted ______A on his sending to bed B on him to be sent to bedC on his being sent to bed D his being send to bed
Little Tim was ill.His mother insisted ______
A on his sending to bed B on him to be sent to bed
C on his being sent to bed D his being send to bed

Little Tim was ill.His mother insisted ______A on his sending to bed B on him to be sent to bedC on his being sent to bed D his being send to bed
答案：C.
翻译：小蒂姆病了.他妈妈坚持他要被送上床睡觉.
1.固定短语insist on doing sth,即介词on后面必须加动名词,不能加不定式,排除B；
D项缺失介词on,也可以排除.
2.如果doing sth前面加上逻辑主语时,则必须使用动名词短语的复合结构即：sb/one's doing sth来表达.
如果用代词做动名词的逻辑主语,则可以使用人称代词宾格或形容词性物主代词,即此时可以使用him/his均可.
从句意来看,him/his所代指的Tim和动词send之间明显为被动关系,排除主动结构的A；
3.所以,正确答案为C,另外也可以使用on him being sent to bed.