It will do you good to _____ a holiday.
Professor Smith, along with his assistants, _______ on the project day and night to meet the deadline.
I have $20 000 and I need $25 000,but my parents have promised to _______ the difference.
It was a pity that the great writer died _______ his works unfinished.
After _______ absence of 10 years from his hometown, Mr. Li doesn't know _______ great changes have taken place there.
As a rough estimate, Nigeria is _______ Great Britain.