The air crash occurred, __________.
A. killing 50 people and injurying 100 people
B. leaving 50 dead and 100 injures.
C leading to 50 dead and 100 injuries
D. causing 50 deaths and 100 injuries
He didn't go by bike with me.That's ________ there was something wrong with his bike.
| A．because | B．why | C．how | D．when |
They________have arrived at lunchtime but their flight was delayed.(2011·全国 )
| A．will | B．can | C．must | D．should |
—Must I turn off the gas after cooking?
—Of course.You can never be ________careful with that.
| A．enough | B．too | C．so | D．very |
________Tom to be fit for the office, the boss________taking him on.
| A．Consider；considered | B．Considering；considering |
| C．Considering；considered | D．Considered；considering |
The company is starting a new advertising campaign to ________new customers to its stores.
| A．join | B．attract | C．stick | D．transfer |