I’m _____ tired _____ I can’t walk any more. [ ]

They will call us as soon as they ______ there.

He was driving home on the highway last night when he was stopped by a policeman， .

My dad has lots of writers his friends so he has a collection of books for free.[ ]

What can we learn from Lei Feng? — We should not only think about , we should think about others as well.