_____, I couldn’t find a solution to the problem.
— How is the test that you took yesterday?— Unfortunately, not even one of the hundred students who took the test ______ passed.
— Hey! Everyone in the office was at the dinner party in honor of Mr. Charles except you. What happened?— I ______ after Mike, my colleague. He was badly ill.
All the teachers are well aware of the fact that most students, especially teens, need help and encouragement ______ punishment.
Now that you have accepted the task, the only thing you can do now is ______ on how to fulfill it.
Who ______ the fight against the H1N1 flu ______ it not been for the Chinese scientists’ great efforts?