Robert felt at home on the ice, while Brian floundered, so 
OPTIONS:
- Robert offered to give them lessons.
- Brian offered to give them lessons.
Robert offered to give them lessons.

Victoria asked Samantha to draft up a power of attorney document for them since 
OPTIONS:
- Victoria was ignorant about it.
- Samantha was ignorant about it.
Victoria was ignorant about it.

Bill sprayed all the poison from the bottle into the hive until the 
OPTIONS:
- bottle was full.
- hive was full.
hive was full.