IhaveseenthefilmTitanicalready.When____you____(see)it?Thedaybeforeyesterday.
Mr.Black____(live)inChinasincefiveyearsage.
We____treeslastSunday.Sofarwe____(plant)over3,0000treesthere.
Theoldman____(die)lastyear.He____(die)forayear.
---Where____you____(put)thebook?Ican'tseeitanywhere.
---I____(put)itrighthere.Butnowit'sgone.
这些答案是什么,从那看出来应该这样填的?
是为什么这样填!
比如IhaveseenthefilmTitanicalready.When____you____(see)it?Thedaybeforeyesterday,应填have和seen,因为现在完成时用have...过去分词