It was at the airport that John met Mary...为什么‘that’ 不可以用‘wh

It was at the airport that John met Mary...为什么‘that’ 不可以用‘wh It was not clear at that time ____ we met again so soon.A.wh It was in the street( )I met John yesterday.A.that B.where 英语翻译It was the first time that Mary was alone at home.Her gr he is not the man ____he was twenty years ago.为什么不可以用that ___ is he whom you met at the station.为什么填That 不填It? it was because he was ill that he didn't come 为什么要用that而不用wh It was at the gate I guess（）He told her the news.A.that B.wh It was not until the midnight ___ John came home.为什么填that而不填 强调句的反意疑问句 It was Mr.Smith that you met at the meeting ,——?横线 at the airport that morning什么时态 ----was his anger that his face tured red.为什么要用such 用it不可以吗、