#[58] My mother is doing some washing._______ ,my father is

#[58] My mother is doing some washing._______ ,my father is preparing dinner.
A.Otherwise
B.Meanwhile
C.Anyhow
D.Therefore
翻译包括选项,并分析.

当然选B,B meanwhile,表示与此同时,相当于while或when.但when或while不能两个时态都是一样的,因为要么一个主句,一个从句,表示有主次.但meanwhile就表示at the same time,对于前后两个句子没有先后或者主次之分.