Problem: How does the sentence end?

The brand new mattress didn't fit on the bed frame, because the 
OPTIONS:
- mattress was too long.
- frame was too long.
Answer: mattress was too long.

Problem: How does the sentence end?

Cars were zooming by while Angela ran into traffic to save Erin who had been hit. 
OPTIONS:
- Angela was injured.
- Erin was injured.
Answer: Erin was injured.

Problem: How does the sentence end?

The company made a gum using a new type of tree sap and food coloring, but the 
OPTIONS:
- sap came from industrial waste.
- coloring came from industrial waste.
Answer: coloring came from industrial waste.

Problem: How does the sentence end?

I filled the watering can using the jug so now the 
OPTIONS:
- watering can is full of water.
- jug is full of water.
Answer:
watering can is full of water.