l didn't know which one I should choose.改为同义句:I didn't know which one ___ ___.

l didn't know which one I should choose.改为同义句:I didn't know which one ___ ___. He didn't know which hat was his.还是应该用：He didn't know which hat his was. l don't know 与l didn't know的区别如题 the man didn't know which gift he should choose.=the man didn't know __ __ __ __. the man didn't know the way to the hotel ,and l didn't ______ l didn't know what to say中didn't为什么用过去式 I didn’t know l don't know which Chinese restaurant ___(choose). 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 The old woman didn't know which bus she should take.同义句：The old woman didn't know which bus_____ _____. 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 i didn't know you had called the police before l came here为什么是didn't 而不是don't at ( ),l didn't know him ,but now l do .括号里填什么单词 The traveller didn't know(?)which direction to go.A.in B.at C.to D./ Have you ever helped ____you didn't know?A.someoneB.anyone.Which one to choose? Kitty really didn't know which dress she should choose化成简单句QAQ. He didn't know which pet ----a.get b.got c.to get I didn't know which botton to press这是不是一个宾语从句?讲明理由