The officer demanded that such things ______from happening again.
| A．prevented | B．prevent | C．be prevented | D．were prevented |
In this institution a medal together with a prize of certain sum of money _______ gains success in science and technology every two years.
| A．are given to anyone | B．is given to whoever |
| C．are given to who | D．is given to whom |
After _______ seemed about five hours，we finally arrived at the beaches，just _______ rubbish and thrown- away plastic bags here and there.
| A．when；finding | B．what；to find | C．which；to find | D．that；found |
This small mountain village is so perfect a place for holidays that visitors never leave it _________.
| A．feeling disappointing | B．felt disappointing | C．feeling disappointed | D．felt disappointed |
UN Secretary-General Ban Ki-moon left for Pakistan this morning， his assistant _________ him there this Friday.
| A．joins | B．joined | C．joining | D．to join |
The past two years _______ a sharp rise in oil price，which adds to the burden of auto transportation industry.
| A．witnessed | B．witnesses | C．is witnessing | D．has witnessed |