He was obedient to what his parents said.

He cooked using a gas stove.

Her dress was made of velvet and it was very beautiful.

He is majoring in veterinary medicine.

It's important for teenagers to have their own opinions.

He was criticized for having a double standard.

These shoes are very durable because they have a double sole.

He is known as an excellent pilot.

He is good at flying an airplane.

He is good at flying an airplane.