He managed to become a great inventor ___ he left school at 16.
| A．no matter | B．so that |
| C．even though | D．as long as |
－______is your office to your home?
－It’s about 5 kilometers away from here.
A. How far B. How long C. How often
Where ___ you ____?
| A．do,come | B．do, from | C．are, come | D．are , from |
－Have you seen Mr. Black these days, Jack?
－Yes, I met him when I ________ in the street yesterday.
| A．walked | B．was walking | C．have walked | D．is walking |
－_______ do you go to the English club?
－Once a week.
| A．How old | B．How often | C．How much | D．How many |
－Excuse me, does Mr Smith’s son live here?
－He _________ be here, but he has moved.
| A．has to | B．used to | C．tried to | D．happened to |