my brother was singing while my mother was cooking= my brother was singing when my mother was cooking= while my mother was cooking,my brother was singing = when my mother was cooking,my brother was singing 语法都对吧

可以是When I was eating ,my brother was watching He asked me how my brother was.=How____?he asked.A Is your brother B your brother wasC Your brother is D Was your brother my brother was old enough to go to school. My brother was born _____a rainy day on还是in My brother was playing computer games.变否定,疑问, the book (whom) i was taken is my brother's My brother ___(read) many books when I was young. my brother was sick last night,改为同义句 Yesterday was my dad and brother's birthday什么意思 I was eaten cakes by my younger brother. HE WAS TAKEN FOR MY BROTHER 这里为什么加FOR when i was a kid,my brother dropped the bomb My brother was boon ( ) May 7th 1996 It was midnight _____ my brother came homebefore还是until My brother was boon ( May 7th 1996 my brother starts ____when he was only five my brother was always getting into trouble with my parents为什么要用was always getting my brother was singing while my mother was cooking= my brother was singing when my mother was cooking= while my mother was cooking,my brother was singing = when my mother was cooking,my brother was singing 语法都对吧