You are too late.The film since half an hour ago.A has begun

You are too late.The film since half an hour ago.A has begun The film has been on since half an hour ago.（对划线部分since half The TV program has begun since half an hour ago（同义句） 英语改病句 The film has begun for half an hour when I got to the 电影结束半个小时了The film()()()since half an hour ago 1.The film began half an hour ago. The film ____for half an hour.A.has begum B.has been begum C Half an hour has passed since the train left The meeting has been on since an hour ago 1.the film __ for half an hour.A.bagan B.has been on C.have You are late．The play _____for ten minutes.A has begun B has The film began half an hour ago.(改为同义句） The film ____ ____ _