______ that after the ash covered the people who failed to flee the city， their bodies nearly completely______ and disappeared，_________ empty spaces in the ash.
| A．It turned out；broke down；leaving |
| B．As turned out；broke up；which left |
| C．It turned out；broke off；leaving |
| D．What was turned out was；broke down；left |
It is a difficult problem for high school studentsthey can properly use the Internet．
| A．what | B．where | C．when | D．whether |
Many countries are now setting up national parks _animals and plants can be protected.
| A．which | B．whose | C．when | D．where |
It was my birthday, so all the drinks wereme．
| A．with | B．in | C．on | D．after |
Yan' an, a city in northern Shaanxi province, has seen great progress in its tourism industry over the past few years．
| A．locating | B．located | C．locates | D．to locate |
China's economy and financial market will be onsteady path in 2014, Premier Li Keqiang said on Friday duringtrip to Tianjin．
| A．a; a | B．the; a | C．a; 不填 | D．the;不填 |