Answer
A1.Bark...The sound that a dog makes...when provoked or being territorial
A2.The harder part of a tree...which is the external part
B1.Fan an electronic device or non electronic device that turns around to give of cool air
B2.A group of people who are obsessed with a particular....Event /person/object...
Explanation:
A1...My neighbour's dog,Charlie bark as I ran towards my car..
A2.This Peach tree has a smooth bark...
B1."I need a fan,this weather is killing me."
B2.I'm a huge fan of the Korean Pop group "BTS"