As we all know, it was _________ that resulted in the terrible car accident.
| A．because of her carelessness |
| B．because she was careless |
| C．her being careless |
| D．she was so careless |
_____ injured were taken to a nearby hospital by the car that passed by _____ scene of the accident.
| A．An; 不填 | B．An; the | C．The; the | D．The; 不填 |
Over 8,000 people attended the marathon, ______ it the biggest sporting event in the area.
| A．making | B．made | C．to make | D．having made |
That bar on center street, _______ by the way is very nice, is owned by Bill’s brother.
| A．which | B．what | C．that | D．where |
We hope the new machine will work faster, ______ reducing our costs.
| A．however | B．instead | C．thus | D．anyhow |
Mr. Smith soon made _____ clear why he had asked for a conference.
| A．one | B．it | C．this | D．that |