1.Couldyoutellme___whoyouarewaitingfor____?
为什么“whoyouarewaitingfor”主语不是过去时吗?为什么是“youare”而不是youwere
2.Ireallydon'tknowifshe____willfind____itwhenshe_arives______我不太明白“arives”为什么不是willarive?