I saw a UFO-over my head when I was walking toward the bus stop yesterday.中间填是fly flew 还flying

I saw a UFO-over my head when I was walking toward the bus stop yesterday.中间填是fly flew 还flying A UFO flew over my head shile I was walking toward the bus stop yesterday. A UFO flew over my head while I was walking to ward the bus stop yesterday. ___ the way,I saw a UFO yesterday. Jim saw a UFO lying over his head.(改为同义句) Jim saw a UFO lying over his head.(改为同义句) When I was walking down the street, I saw a plane __ over my head.填空!Thanks! A ufo flew over my head while I was waking toward the bus stop yesterdayA UFO flew over my head while I was waking toward the bus stop yesterday 为什么是 A UFO flew ,不是 A UFO was flying呢?while引导的时间状语从句不是主从句都 ___I was geting my book___The car,I saw a UFO landed.A.while out of B.while out from C.when out of D ___I was geting my book___The car,I saw a UFO landed.A.while out of B.while out from C.when out of D I have no experience of seeing aliens.But o___of my friends told me that he saw a UFO last week.根据首字母填空 When I was walking across the square,I saw a plane_______over my head.When I was walking across the square,I saw a plane_____ over my head.A) flies B) fly C) flew D) flown i saw a saw saw a saw. i heard someone saw a UFO last night哪里错了?heard someone saw a 中改一个。 英语单项选择 I saw a UFO （ ）on my house in my dreaA is landing B land C lands D to land为什么?明白的进这个算是虚拟语气么 I had a very unusual __________yesterday.I saw a UFO land in front of me.A.decisionB.testC.friendD.experience i saw a saw saw a I never saw a saw saw a