[TEACHER] Which of the following two sentences does not make sense?
Options:
- Sentence A: "The problem was so difficult that it took him a long time to work it out"
- Sentence B: "The problem was so difficult that he worked it out easily"

[Student] The problem was very simple and worked out easily.
The answer is Sentence B.

[TEACHER] Which of the following two sentences does not make sense?
Options:
- Sentence A: "Monkeys are the ancestors of humans."
- Sentence B: "Dinosaurs are the ancestors of mankind"

[Student] Scientific research shows that monkeys are the ancestors of humans.
The answer is Sentence B.

[TEACHER] Of the following two sentences, which one is against common sense?
Options:
- Sentence A: "Dogs can fly freely in the sky"
- Sentence B: "Dogs can run freely on the ground."

[Student]
Dogs do not have the ability to fly.
The answer is Sentence A.