No sooner ______ down on bed ______ the telephone rang.
This year my brother made a little progress in his study, but _____, it’s been an unlucky year for him.
____ the teacher expected, the students were very excited after hearing the good news.
It was in the United States that I made the _________ of Professor Jones.
Many experts stick to the view _____ teacher development is _____ the key to quality education lies.
I have to go to school by bus because my bicycle _____.