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
______ difficult questions they are! I can’t answer them．
A．How B．How a C．What D．What a
