At the end of last year, New York’s stock market fell, ________a global financial crisis.
| A．setting off | B．driving off | C．giving off | D．laying off |
______ water to grow is well known.
| A．That trees need |
| B．These trees need |
| C．That tree needs |
| D．Trees need |
China has made a promise________ she will try her best to keep the world peace.
| A．what |
| B．that |
| C．which |
| D．whether |
Mary, it's already 7 0'clock I'm afraid there is not much time ________for you to ________ for the ball.
| A．leaving; get dressing |
| B．remaining; get to dress |
| C．remained; get dressed |
| D．left; get dressed |
They arrived at the farmhouse, in front of which________.
A is sitting a boy
B. sat a boy
C. a boy sat
D. a boy is sitting
All possible means ________been taken to prevent the river________．
| A．have;polluting |
| B．has; polluted |
| C．has; from polluted |
| D．have;being polluted |