—May I see your ticket, please? I think you ________ in my seat.—Oh, sorry. My seat is upstairs.
—We must _____ their permission whatever the cost is. — But I’m afraid they will reject.
I promise _____ else can you find _____ better computer at such a low price.
It wasn’t until he came back _____ he knew the police were looking for him.
I don’t know why you are so concerned — it’s not your problem _____ .
When the cheering _____ , the president continued his speech.