CCTV news reported Chairman Xi Jinping visited Russia _________ the afternoon ______ March22nd, 2013．
| A．in ; in | B．in ; of | C．on ; in | D．on ; of |
This TV play is very interesting．Why _________ down and watch it?
| A．don’t sit | B．not sit | C．not to sit | D．not sitting |
—May I speak to the headmaster?
—He’s not here．He _______ Beijing．Can I take a message?
| A．has gone to | B．has been to | C．has gone | D．has been |
Ann is a careful girl．She always goes over her exercises to ____ here are no mistakes．
| A．look for | B．make sure | C．find out | D．think about |
Your iPad is quite nice． Where did you buy ______? I want to buy ______, too．
| A．one ; one | B．it ; one | C．it ; it | D．one ; it |