the boy was waiking down the street when the UFO landed

the boy was waiking down the street when the UFO landed the boy was walking down the street when the UFO landed同一句 the boy was walking down the street when the UFO landed改为一般疑 英语翻译The boy was walking down the street when the UFO landed. The boy was walking down the street when the UFO landed.(改为同 the boy was walking down the street when the UFO landed 神马意思 The boy was walking down the street when a UFO landed on Cen 1.The boy was walking down the street when a UFO landed. while the boy was walking down the street,the UFO landed （while the boy was walking down the street）,the UFO landed 对 while the boy was walking down the street,the UFO landed同义句4 While the boy was walking down the street,the UFO landed,对Wh