-- _____is that used for?---_____ the floor.
---Sorry, sir. I can't answer this question.---Well, you are supposed ______ this part of history.
I promise _____ else can you find ____ better computer at such a low price.
--- You seem to be familiar with London.--- I ______ there for three years. It’s great to be back.
Much to my surprise, she ______ tears ______ she read the letter.
----You didn’t wait for Mr. Smith last night, did you? ---- Yes, but we _______. He didn’t return home at all.