Tom was seen playing on the playground是什么?

Tom was seen playing on the playground是什么? Tom,along with three other boys was seen playing football a moment ago 为什么用WAS tom was playing computer games（ ）. He_ playing football when his mother_to the hospital.A saw;took B.was seen;was taken Cwas seen;tooD是was seen;was taking 选哪个啊 Tom ____ into the room secretiy last night.A. was seen climb B. was seen to climb C.was seen climb D. saw to be climbed要解释! Tom was interested in playing computer games before.(同义句)Tom--- --- be interested in playing computer games . The girl was last seen ____by the rive.A.to play B.Playing C.Played D.to be playing The boy was last seen being playing by the riverside with other boys 改错 The boy was seen ______on the sports ground.play / to play /playing Tom was ____(hurt) while he was playing soccer.And now his cut is ____(hurt) little Tom was seen-------为什么seen后为crying而不是to cry?你英语很好哦,感激…… When I first saw Jerry,he was playing with Tom.改为同义句When I saw Jerry___ ____ _____ _____,he was playing with Tom _______ Tom _______ at three yesterday afternoonA would,play footballB Is ,playing footballC Has ,played footballD Was,playing football Tom was playing ping-pong 〔when I left〕对划线部分提问 求英语句子翻译When Lang was two years old he saw Tom playing the piano Was Tom playing the piano when you came in?否定回答_____,he______ While Tom was playing with the balloon,he saw a plane ___ (fly) over his head. Tom started playing for his national team when he was seventeen.(同义句）=Tom started playing for his national team _______ ______ ________ _________ _________.