Some countries have banned smoking in public places ______ public health.
| A．improve | B．to improve |
| C．improving | D．improved |
After the earthquake passed away, all the villages and towns were _____. And no being was seen.
A. in ruin B. in ruins C. at ruins D for ruins
It was a long time before the cut on my hand _____ completely.
| A．healed | B．cured | C．improved | D．recovered |
The final _____ of the play will take place on Monday.
| A．action | B．performance | C．view | D．sight |
I'm afraid this painting is not by Picasso. It's only a copy and so it's _____.
| A．priceless | B．invaluable | C．unworthy | D．worthless |
On seeing Jay Chow appear on the stage, the audience _____ cheering.
| A．burst on | B．burst into | C．burst in | D．burst out |