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. WhileB. 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
________ is exciting news that she has received a doctor’s degree.
A. What 
B. It C. This D. That
