đặt giới từ cho câu : 1.He lives.......that house........ the second floor 2.This tooth is bad . It musn't stay .......your mouth a moment longer , we must take it....... straight away 3.what are those children doing.......the roof ? tell them to get down immediately 4.A:can i speak to Ms tomson,please B:I'm afraid she isn't........She went.......half an hour ago 5.They go.....work....bus 6.sometimes we can't open the door , and then we have to climb......the window 7.I was born,,,,,,may 8.sara is having a party......7 o'clock......12th July