ASMO Asian English Olympiad 2022 — Level 1 — Grade 1–2 — School Category Câu hỏi 37

Câu hỏi 37

One of the usual ways for people to remove bacteria from water is through the usage of chlorine.

1. There are a lot of bacteria in the water.
2. It Is prohibited to use chlorine to treat bacteria in the water.
3. Chlorin is commonly used to treat bacteria problem in water.
4. The only way to eliminate bacteria from water is by using chlorine.