Footsteps ___ his return.

______ expense, we must take every measure to save the old man’s life.

 --- Diaoyu  Island belongs to China ---Surely it does! We Chinese will never ____it up

He left school early, and as an adolescent, determined ______  in South American, set off from his home.

You were _______ to take your shoes off when you entered the school lab, but you didn’t.