Drivers are warned that it is dangerous to talk on the phone while________.
| A．drive | B．driving | C．drove | D．to drive |
The human mind can many tasks that other animals cannot, like using language and judging what other people are thinking．
| A．carry out | B．take out | C．put out | D．bring out |
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 |