Tolong dong aku bingung

Penjelasan:
Here's the answer:
JAWABAN:
1. What was he doing while he was riding the bus?
Answer: He was reading the newspaper
2. ga di isi sama nomor 3 :)
4. What was she doing while she was taking a taxi?
Answer: She was watching a video
5. What were they doing while they waiting for the traffic light?
Answer: They were sending text message