He didn't know which hat was his.还是应该用：He didn't know which hat his was.

He didn't know which hat was his.还是应该用：He didn't know which hat his was. the man didn't know which gift he should choose.=the man didn't know __ __ __ __. He didn't know to choose which one.该为He didn't know which one to choose.求原因?one后为什么加to The man didn't know which car he should buy (保持原句意思）The man didn't know which car （ ） （ ）每括号限填一词 He didn't know which pet ----a.get b.got c.to get Do you know the reason why/for which he didn't come?这句话的意思? He didn't know which office room_____.为什么用to send it to,而不用to have it sent to 请定语从句do you know the reason for which he didn't come还原成简单句. He didn't know the reason__she got angry.A for that B for which C of which D which为什么选B 不选A He didn't know how he could get here He said he didn't know it yet 怎么翻译 l didn't know which one I should choose.改为同义句:I didn't know which one ___ ___. 英语句子成分划分He didn't come.That is why he didn't know He didn't know what to do next.He didn't know what he ____ ____ next. He didn't know what he should do.(改为简单句)He didn't know ___ ___ ___. He didn't know when he would start.(改为同义句） He didn't know （ ） （ ）（ ） He didn’t know _________ bus to take when he wanted to go to that famous five-star hotel.A：what B：which C：where D：why didn't he know the sun (rise) in the east?