The light will be thrown ______ the cause of cancer by research that is now in progress.
| A．to | B．upon | C．in | D．for |
.—You are always full of _______.Can you tell me the secret?
—Taking plenty of exercise every day.
| A．power | B．strength | C．force | D．energy |
The young man made a ______ to his parents that he would try to earn his own living after graduation.
| A．prediction | B．promise | C．plan | D．contribution |
What’s the _____ of having a public open space where you can’t eat, drink or even simply hang out for a while?
| A．sense | B．matter | C．case | D．opinion |
He managed to reach the summit of his career, but it was at the _________ of his health.
| A．consumption | B．credit | C．exhaustion | D．expense |
As is well known, the brain performs a very important _______, which controls the nerve system of the body.
| A．motion | B．action | C．function | D．fact |