_____ 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 |
We can never expect bluer sky unless we create less polluted world.
| A．a; a | B．a; the |
| C．the; a | D．the; the |
I was born in New Orleans, Louisiana, a cityname will create a picture of beautiful trees and green grass in our mind.
| A． | which | B． | of which | C． | that | D． | whose |
At the age of 29, Dave was a worker, _____ in a small apartment near Boston and ______ what to do about his future.
| A．living; wondering | B．lived; wondering |
| C．lived; wondered | D．living; wondered |
I can ______ be a teacher. I’m not a very patient person.
| A．seldom | B．ever | C．never | D．always |
When he _______ the door, he found his keys were nowhere.
| A．would open | B．opened | C．had opened | D．was to open |