As you know, it is my duty to __________ my younger sisters from being hurt when they are in danger.
| A．prevent | B．keep | C．stop | D．protect |
What a great artist! It seemed only a couple of minutes ____ he had finished this wonderful painting!
| A．until | B．when | C．after | D．before |
I don’t remember how many years ago____ State Street began its business in China.
| A．it was when | B．it was that |
| C．was it when | D．was it that |
We met an old friend in New York ____ our expectation.She waved at us ____ the street when she saw us.
| A．with;in | B．out of;next to |
| C．in;out of | D．beyond;from across |
Amy insists that she ____ the secret to lose weight. But she won’t share it with us.
| A．had discovered | B．discovers |
| C．has discovered | D．will discover |
We should make the world be aware of the fact that the land hunger ____ population growth before we carry out our population policy.
| A．contributes to | B．leads to | C．results in | D．results from |