Question:
Christine was much more skilled at surgery than Erin so

Answer:
Continue the sentence -- Christine offered to neuter the dog.

Question:
Kayla fit into a size six shoe while Tanya did not because

Answer:
Continue the sentence -- Kayla has small feet.

Question:
Although Tanya stretched before their run and Sarah didn't,

Answer:
Continue the sentence -- Tanya got a cramp and had to stop.

Question:
Angela ran away from the fire, while Mary rushed towards it to put it out, since

Answer:
Continue the sentence -- Angela was a coward.