He’s given me so much help that I really want to do something for him _____.
—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.