They were walking in the street( ) he saw them

They were walking in the street( ) he saw them they were walking in the street ___ he was walking in the street ＿＿ he saw his old friend John.A The boy is walking in the street when he saw the alien _____ When bob was walking in the street ,he saw something strange walking in the street I saw they were running down the street last night. he is walking down the street和he is walking in the street有什么 they asked him to tell them everything ( )he saw in the stre while Tom saw the UFO,he was walking down the street with hi They met her （when they were walking on the street）.（针对括号部分提 they were walking on the street when all of a sudden they sa