The better use you can make __________ time, the greater contributions you will make _________ society.
| A．in； to | B．of； to | C．on； for | D．up； for |
The two things _______they felt very proud were Jim’s gold watch and Della’s hair.
| A．about which | B．of which | C．in which | D．for which |
According to the survey, two thirds of the area__________covered by trees now and 90% of the population__________contributions to the Greening Project in the city.
| A．is ; has made | B．are; have made |
| C．is; have made | D．are; has made |
He asked me__________with me.
| A．what the matter is | B．what the matter was |
| C．what is the matter | D．what was the matter |
It is time for class. Will you please get the blackboard__________?
| A．to clean | B．cleaning | C．cleaned | D．having cleaned |
This is the biggest lab__________we have ever built in our university.
| A．which | B．what | C．that | D．Where |