1、when,happens,take,not,fire,the,do,lift （.）
Do not take the lift whenfire happens. 发生火灾时不能乘坐电梯.
2、was,when,one o’clock,she,saw,big,mouse,it,about,a（.）
She saw a big mouse when it was about one o’clock . 大约一点的时候,她看到一个大老鼠.
3、get,big,is,fire,when,the,can’t,out,building,the,I,of（.）
I can't get out of the building when the fire is big. 当火灾变大的时候,我不能逃出这个大楼了.
4、you,free,walk,busy,when,are,down,the,street (这句是不是少了个单词啊?）
Walking down the busy street when you are free.当你有空的时候去繁华的大街上走走.
（when you are free to walk down the busy street)有to就写这句
5、children,under,the,tree,many,you,see,can（.）
You can see many children under the tree.你能在树下看到很多小孩.