In the past few years, research has suggested that Vitamin D may increase the level of serotonin（血清素）, one of the key nurotransmitters influencing our mood, and ________it helps to relieve mood disorders.
| A．that | B．where | C．what | D．which |
They look forward a chance to receive further education.
| A．of getting |
| B．in getting |
| C．to get |
| D．to getting |
The discovery of these tombs is ______ for scholars' studying Chinese history.
| A．of very important |
| B．great significant |
| C．of great significance |
| D．greatly importance |
—You are always working. Come on, let us go shopping.
you ever want to do is going shopping.
| A．Anything |
| B．Something |
| C．All |
| D．That |
I would like to see more attention to forms of transportation that are not private cars.
| A．pay |
| B．be paid |
| C．to pay |
| D．paid |
When the minister came to the snow-stricken area, he was happy to see the disaster victims well ________.
| A．take care of |
| B．took care of |
| C．taken care of |
| D．taking care of |