That piece of music sounds quite good. Who _____ the piano upstairs?
| A．is playing | B．played |
| C．plays | D．has played |
We went into a hall, on_____ walls hung a few pictures of some famous scientists.
| A．its | B．which | C．whose | D．those |
Newly-developed materials for spaceships can _______ extreme weather conditions.
| A．hold | B．support | C．stand | D．compete |
. —Tom, you get dead drunk again!
—_______? It’s none of your business.
| A．So what | B．How come | C．Why not | D．What for |
His album won several awards at the music festival, _______ was beyond his wildest dream.
| A．which | B．that | C．where | D．it |
There is nothing more I can try _______ you to stay, so I wish you good luck.
| A．being persuaded | B．persuading | C．to be persuaded | D．to persuade |