He has always insisted on _______ Mr. Berg instead of Justin.

 We are sure everything here____ by the time you come back from abroad in a few years.

I left my pen on the desk and now it’s gone; who ________ it? 

--- I’m sure Andrew will win the first prize in the final.  --- I think so.  He _____ for it for months. 

To everyone’s amazement now, technology ________ faster than most people can keep pace with.