If you _______nature and do things at the wrong time of year, you will have to do more work and the results will not be so good.
| A．go after | B．go away with | C．go in for | D．go against |
They kept trying, and their efforts finally _____. They got enough money to _____ their debt.
| A．are paid off; pay back | B．paid off; pay off |
| C．are paid for; pay back | D．paid back; pay off |
He is disappointed. He appears ____ what has happened to his competition.
| A．knowing | B．to know |
| C．having known | D．to have known |
I was watching the news on TV ________ the power went off.
| A．when | B．as | C．while | D．until |
It was not until I failed in the test ______ I realized I had wasted too much time instead of preparing for it fully.
| A．did | B．before | C．that | D．where |
As is widely acknowledged, a great number of traffic accidents ____ numerous deaths and countless property loss all over the world very year.
| A．subscriber to | B．contribute to |
| C．result from | D．aim at |