your mather does some---at home.does not she?A.working in B.work in C.works inD.working

d

首先，do some加动词的现在分词，表示做……（例：do some washing=wash some clothes）
所以，答案在A与D中
其次，后面已有介词at，则in可以省去
选D

选D
do + some / the + doing (动名词)
“做点儿...”
如 do some shopping / do the shopping 买点儿东西
do some reading / do the reading 看点儿东西
这是固定句型!
本句的意思是：“你爸爸在家干点儿活,不是吗?”

D