Working hard is not only a_____ of a great success, but is among the essential requirement.
________taller of the two girls is my daughter who was made ________monitor yesterday.
—How did she get infected? —She _______ the viruses without any protection.
The teacher told Tom to sit ______ in class.
________ at the party, I found Tina seated alone in the front row.
There was no lack_______ volunteers, but money.