Many workers were organized to clear away remained of the World Trade Center.
| A．those | B．that | C．what | D．where |
It has been proved ___ eating vegetables in childhood helps to protect you against serious illnesses in later life.
| A．if | B．because | C．when | D．that |
As his best friend , I can make accurate guesses about ___he will do or think.
| A．what | B．which | C．whom | D．That |
People in Chongqing are proud of_______they have achieved in the past ten years.
| A．that | B．which | C．what | D．How |
The companies are working together to create they hope will be the best means of transport in the 21st century.
| A．which | B．that | C．what | D．Who |
We should consider the students’ request the school library provide more books on popular science.
| A．that | B．when | C．which | D．where |