we----the floor when the teacher came in A sweep B swept C are sweeping D were sweeping 为什么选D不为什么选D不选B

mother .the floor when i ...home be careful when the floor is wet We live on the _____(4) floor. The dog_________(lie) on the floor when I came in we----the floor when the teacher came in A sweep B swept C are sweeping D were sweeping 为什么选D不为什么选D不选B we bring the bill to the floor翻译成中文 Mother ____(sweep) the floor when I left home yesterday. That night I drew a floor plan of our new apartment_she wrote a list of the things we needed to buyas since until when while 应该填哪个 We are sweeping the floor改一般疑问句怎么改 we have a new flat it the third floor. we should tidy our room and s_ the floor often. we were sweeping the floor.的被动语态 we live on the third floor,为什么不用live in They live on the second floor,and we live on the first floor.We live____them.(A).below(B).under We can see some pictures on the floor.( 改为否定句) We ()see() pictures on the floor. He is surprised when he sees the snack on the floor（同义句）He_____________________the snack on the floor The mother was ______ (happy) to see so much rubbish on the floor when she came back.we're going on holiday soon,______(probable) next monthWho is the ______(good) manager among the three. We must use the lift to reach the top floor.一般疑问句___we ___the lift to reach the top floor?