Problem: How does the sentence end?

Emily found out that she has to have surgery, whereas Angela does not, because
Answer: Angela is healthy.

Problem: How does the sentence end?

The hair of Adam is always a mess, while Joel's is tame, so
Answer: Joel has straight hair.

Problem: How does the sentence end?

The returns on the stocks could only go down, while the bonds values would increase , because the
Answer: stocks were an erratic investment.

Problem: How does the sentence end?

She replaced all of the old kitchen knives with new knives, because the
Answer:
new knives were sharper.