Her child had dropped the birthday cake onto the floor, and she was upset because the 
OPTIONS:
- cake is dirty.
- floor is dirty.
floor is dirty.

The book was far more familiar to the person than the magazine, because the 
OPTIONS:
- magazine was common.
- book was common.
book was common.

Natalie found their tongue very useful but Laura found their's less useful because 
OPTIONS:
- Natalie was very taciturn.
- Laura was very taciturn.
Laura was very taciturn.