------ What happened to you yesterday evening? Why didn’t you finish your work?------____ the lights off, we could not continue our work. As a result, we had to leave.
It was until last year that he ______.
The boy pretended ______ his homework, when his parents came back home.
They need twenty more workers ______ their group to do the job..
In the cinema, there was an old man______ beside me.
He gets up early and reads English aloud, ___ he has greatly improved his English.