＿＿＿ he was walking down the road,he was singing a song.A.when B.until C.As D.That为什么

＿＿＿ he was walking down the road,he was singing a song.A.when B.until C.As D.That为什么 he was walking in the street ＿＿ he saw his old friend John.A.before B.when The boy___ down the street when he UFO landedA.was walking B.is walking C.has walked D.walks -----he was walking down the road,he was singing a song.A.when B.until C.As D.That he was walking (slow)的正确形式 He was walking.He was slow.(合并句子) 3.He _,so he was very tired.A.walk and walk B.walking and walking C.walks and walks D.walked and walked __________ yesterday afternoon ,a small tone flew out of a window,and knockde him unconsciousA.As walking along the roadB.Walking along the roadC.When he was walking along the road D.To walk along the road是不是选C He was often seen _________(talk)a walking the streat. 翻译He was walking up the drive towards the house, Mr Smith felt tired when he was walking He was walking ____ ____ street with a book. He was walking with quick ___.他快步走着 He was too tired to go on walking 同义句 He was the first man _____on the moon.选项：A.walkHe was the first man _____on the moon.选项：A.walk B.walking C.to walk D.walks yesterday about eleven o'clock he （）towards the park.A.was talking B.walked C.had been walking D.had walked请说明答案及解析,打错了A.was walking He was walking along the river ________ he saw a little dog struggling in the water.A. while B. when C. as D. which选A 说明理由 He was caught ____the rain when he was walking in the street.为什么用in