--Who should be responsible for the accident?-- The boss, not the workers. They just carried out the order .
___ he came to study in the university, he has made much progress in the study of English.
He suddenly saw Sue _____ the room. He pushed his way ____ the crowd of people to get to her.
I'll come and see you _____ I go to the countryside.
No one helped me . I did it all myself .
Don't try to get off the bus ____ it has stopped.