_____ the front door _____, he had to enter the room through the back door.
| A．Seen; painted | B．Seeing; painted |
| C．Being seen; being painted | D．Seeing; being painted |
Many endangered animals, such as the Malayan sun bear, _____ in danger of dying out.
| A．remain | B．remains | C．are remained | D．is remained |
--How did ____ feel to run 3000 meters at the sports meet?
--Terrible! Especially when I saw I was left so far _____ by the others.
| A．that; alone | B．it; alone | C．that; behind | D．it; behind |
Distance learning is being _____ in several countries to help children in remote rural schools obtain higher education.
| A．attended | B．adopted | C．adapted | D．admitted 26. |
Many gifted students _____ poorly in school because they found school unchallenging and as a result lost interest.
| A．worked on | B．got on | C．lived on | D．carried on |
Being Life’s ____ only black photographer put him in _____ unusual position when Parks set out to cover the civil rights movement.
| A．the; an | B．不填; the | C．the; the | D．不填; an |