Not until____________the exam _________ the importance of doing homework.
| A．had he failed; he realized | B．he had failed; did he realize | C．he had failed; he realized | D．had he failed; did he realize |
Young people who have got jobs may realize university lessons can’t be the only preparation for all of the situations ________ appear in the working world.
| A．where | B．when | C．that | D．what |
Today the public is much concerned about the way _______ .
| A．nature is being ruined | B．which nature is ruined |
| C．on which to ruin nature | D．of nature to be ruined |
It was in the factory _______ his friend worked _______ he picked up a lot of experience.
| A．where, where | B．that, where |
| C．that, that | D．where, that |
He’s got himself into a dangerous situation _________ he is likely to lose control over the plane.
| A．where | B．which | C．while | D．why |
— Obama won the election. It’s amazing!
— Yes. But the result was within ______ we had expected, ______ brought great joy to many young people and the black.
| A．that; which | B．that; that |
| C．what; what | D．what; which |