Grammar All

The data _______ inconclusive.
1. is
2. are
The entire body of data _____ inconclusive.
1. is
2. are
What one ________ do you consider the most important?
1. criteria
2. criterion
Which ________ is more influential--newspapers or television?
1. media
2. medium
The boy first mastered the forming of A's and B's, then learned all his __________.
1. ABCs
2. ABC's
He is a true child of the __________.
1. 1990s
2. 1990's
His two _____________ are _____________ of leading magazines.
1. sister-in-laws / editor-in-chiefs
2. sisters-in-law / editors-in-chief
The ____________ guest sat by the door.
1. hostess's
2. hostess'
The guest sat in the ________________ seat.
1. hostess'