I( )TV when the UFO landedA.am watchingB.was watchingC.have watchedD.watched

I( )TV when the UFO landedA.am watchingB.was watchingC.have watchedD.watched .I was sleeping last night when the UFO l_______. I was___(cut )hair when the UFO landed I was taking a walk when the UFO landed.改成同义I ——when the UFO landed. The phone rang when Iwas watching TV.对when I was watching TV.提问 I was walking down the street when a UFO landed down.还有一个句子是When I went into the living room, I found Jack watching TV.为什么第一个句子是landed down. 而第二个是watching TV.当我进卧室我看到的不应该是一瞬间 翻译：I was watching TV when the alien landed . When I ___ on the TV,it had finished already. when the UFO arrived, I was in the library.was in the library画横线部分提问___ ____ you when the UFO arrived? I was shapping when the UFO arrived(对I was shapping 提问) I'm i___ in the UFO.I often read books about the UFO and think a___ it when I'm free.I often imagine what I would do if I s____ the UFO.I'm really a UFO fan.Friends often ask me q___ about the UFO:What would you do if the UFO attacked you?What would I was taking a shower in the bathroom when the UFO landed 的意思 语法练习过去进行时.when he came in ,his parents____watching TV.when the UFO arrived,we__in the classroomthere____a pen,two rulesand some paper on the table.yesterday,i saw there___still some ink in the bottlethere__few eggs left in the bsket I was walking down the street when a UFO landed right in front of me i was watching tv when i heard the door(knocking)i was watching tv when i heard someone(knocked)at the door两个knock形式对吗? We ------ (sleep)when the UFO -----(arrive) I heard the noise when i was watching TV(划线部分提问)when i was watching TV划线._______ ________ you ______ the noise? I found him _____(watch) TV when I came into the room