We don't know when the accident________.A.has happened B.hap

We don't know when the accident________.A.has happened B.hap We don't know when ____(have)the football match是填has还是have? we don't know what has happened since yesterday since 不是跟延续性 We______her letter last week.We don't know what has happened I don't know ( ) A.when the train will reach B.when the trai we don't know when we will have the school trip = we don't k I don't know ().Can you tell me?A.where do we meet B.when ar I don’t know when we shall start the work. I don't know the girl ___ long curly hair.A have B has Cwith 英语翻译I don't know how to define love.Cause everything has hap we don't know when ______ (start) I don't know ( ) the fashion shop is.A.where B.when.C.how D.