I knew I could not finish the homework _____.
It is not socially __________ for parents to leave children unattended at that age.
He was a good student and scored __________ average in most subjects.
We made up our minds to study hard __________ we could be admitted into university.
The rescue work __________three parts, of which saving the people's lives is the most important one.
For all these years I have been working forothers. I'm hoping I'll __________ myown business someday.