The third option will be the one
Answer:
01. She read a book when the phone rang.
02. My son found a coin when he walked
03. She brushed her hair when the postman came.
04. When they arrived we waited for the bus.
What i think you did a typo
I don’t know what I’m supposed to put but I feel like yes??
When solid they dont move they vibrate but when in liquid they move fast past each other
