looking forward to doing是什么时态

Looking forward to your looking forward to your Looking forward to your the moment you'd been looking forward to came at Looking forward to your reply. LOOKING FORWARD TO YOU AGAIN looking forward to the day Looking forward to the final we are looking forward to the Word Cup2010 A.visiting B.looking C.seeing D.watching I am looking forward to ____ you again.A.seI am looking forward to ____ you again.A.see B.look C.seeing D.looking Jim was looking forward to _______ to ChinaJim was looking forward to _______ to China.A.visit B.visits C.visiting D.visited是不是选C？为什么呢？ the students are looking forward to _ home Ago tthe students are looking forward to _ home Ago to B go.C going to.D going look forward to doing和looking forward to dolook forward to doing和looking forward to do的区别 helen is looking forward to ___her daughterhelen is looking forward to ___her daughter.A.see B.watch C.seeing D.saw looking forward to构成的短语是什么? I will be looking forward to it! I'm looking forward to tomorrow i am looking forward to什么意思