. It’s q
uite an informal gathering; you needn’t _____ for it.
| A．dress down | B．dress up | C．dress | D．dress on |
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 |
The archaeologists found gold coins and pottery in the lowest level of the site ________ they reached three months ago.
| A．what | B．for which |
| C．that | D．to which |