32.An air France jet is reported________in the Atlantic Ocean with 228 people aboard，the airline’s worst disaster in its 75-year history．
| A．to have crashed | B．to have been crashed |
| C．having crashed | D．having been crashed |
Mark drives his car too fast and, what's more, very carelessly, ________ worries his mother.
| A．a | B．what |
| C．it | D．which |
Occasions are quite rare ________ I have the time to spend a day with my kids.
| A．who | B．which |
| C．why | D．when |
The three backpackers finally reached the top of Mount Huangshan, ________ they could enjoy the breathtaking sights to their heart's content.
| A．when | B．where |
| C．why | D．how |
Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, ________ the number of people infected with the virus is going up sharply.
| A．when | B．that |
| C．so that | D．where |
With the development of agriculture, the people ________ village I taught are now living a happy life.
| A．in whose | B．whose |
| C．in which | D．which |