Mengapa ada banyak anak-anak yang berenang di sungai?
a. There was no swimming pool.
b. Their parents used to swim there.
c. The river was clean.
Answer: The river was clean.
4. What happened to the river?
Apa yang terjadi pada sungai?
a. It became dirty.
b. Nothing happened.
c. It became clean.
Answer: It became dirty.