英语翻译
翻译
1.What wrer you doing when the UFO arrived?
2.The boy was walking down the streetwhen the UFO landed.
3.While the boy was walking down the street,the UFO landed.
用括号内所给单词的适当形式填空.
1.When the bus arrived,he______(stand)in front of the library.
2.My mother__________(buy)me a parrot for my birthday last Sunday.
3.Mother_______(sweep)the floor when I________(leave)home.