One-third of the country _____ covered with trees and the majority of the citizens _____ black people.
| A．is; are | B．is; is |
| C．are; are | D．are; is |
The policewoman ______ that I hadn’t fastened my seat belt and signaled me to stop.
| A．spotted | B．explored |
| C．instructed | D．described |
_____ 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 |