who___it grandfather didA buy B was bought C bought D did buy为什么选C不选D啊?

who___it grandfather didA buy B was bought C bought D did buy为什么选C不选D啊? grandfather是什么意思? great grandfather Grandfather'birthday The floor is so clean.Who___it?A.made B.took C.folded D.swept They didn't know who___it Adesign Bis designing Cdesigned Dwas designed 请说明理由! your grandfather是什么意思快 Grandmother+Grandfather=Grand() how （）your grandfather. Grandfather's Clock 歌词 grandfather paradox是什么意思 grandfather什么意思 grandfather对应词 grandfather中文意思是什么 great-grandfather是什么意思 great-grandfather是什么意思 grandfather的汉语是什么 That is his grandfather.对his grandfather进行提问