--- Do you know the reason _________ pilots turn off the plane’s lights before taking off?
---The practice is for the passengers to adjust to the dark _________ an emergency.
| A．why; for fear that | B．for which; in case of |
| C．how; for fear of | D．that; in case |
The Canadian dollar has fallen about 20 percent in value, making that dream ski vacation in Whistler Mountains __________than ever.
| A．seems more within reach | B．seem more within reach |
| C．seems within more reach | D．seem within more reach |
--- Sorry, honey. I’m afraid we are too busy to take a holiday at the present time.
--- Could we take ______ two weeks from now?
| A．one | B．that | C．it | D．a one |
China is a peace-loving country and under ____ circumstances ____ first use nuclear weapons.
| A．no; will China | B．no; China will |
| C．all; will China | D．all; China will |
being fun and good exercise，swimming is a very useful skill．
| A．Apart from | B．As good as | C．In addition | D．As well |