Problem: How does the sentence end?

Joseph but not Justin had to buy shampoo because
OPTIONS:
- Joseph had a head full of dirty hair.
- Justin had a head full of dirty hair.
Answer: Joseph had a head full of dirty hair.

Problem: How does the sentence end?

Donald's hobby was hiking while Kyle liked to read, so
OPTIONS:
- Donald spent a lot of time outdoors.
- Kyle spent a lot of time outdoors.
Answer: Donald spent a lot of time outdoors.

Problem: How does the sentence end?

Nick drank much more water than Joseph did so
OPTIONS:
- Nick ended up gaining more weight.
- Joseph ended up gaining more weight.
Answer: Joseph ended up gaining more weight.

Problem: How does the sentence end?

He completed the painting, but gave up on the drawing, because he thought the
OPTIONS:
- painting was easy.
- drawing was easy.
Answer:
painting was easy.