— What a terrible collision accident!
— Judging from the scene, personally, it is one or two car drivers, rather than the truck driver, who ______.
| A．is to blame | B．are blamed |
| C．are to blame | D．is blamed |
He is not easy-going, but his trust in his friends will last forever once _______.
| A．to be gained | B．is gained | C．being gained | D．it is gained |
The reason ____ he was late for school was _____he had to send his mother to a hospital.
| A．that; why | B．why; because | C．why; that | D．that; because |
_______ I’m not sure of winning the match, I will have a try anyway.
| A．While | B．Before | C．Once | D．Since |
Doris’ success lies in the fact _______she is co-operative and eager to learn from others.
| A．which | B．that | C．when | D．why |
The system of Braille is really _____________ to the blind.
| A．of great useful | B．great useful | C．great use | D．of great use |