Choose the underlined part that needs correction in each of the following sentences

IV. Choose the underlined part that needs correction in each of the following sentences.
1. I (A) will go (B) to school (C) by bus every (D) day.
2. The (A) Browns (B) are traveling (C) to Ho Chi Minh city (D) in train.
3. (A) When the weather (B) is good, (C) we will go (D) out in the suburbs
4. (A) We should (B) use (C) reusable water bottles (D) despite of plastic ones.
5. (A) There will be (B) more flood if deforestation (D) can happen widely.