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．which | C．that | D．where |
Some pre-school children go to a day care center，__________ they learn simple games and songs.
| A．then | B．there | C．while | D．where |
After graduation she reached a point in her career __________ she needed to decide what to do.
| A．that | B．what | C．which | D．where |
The village has developed a lot __________ we learnedfarming two years ago.
| A．when | B．which | C．that | D．where |
Theywill fly to Washington，__________ they plan tostay for two or three days.
| A．where | B．there | C．which | D．when |
I will give you my friend's home address，__________Ican be reached most evenings.
| A．which | B．when | C．whom | D．where |