Necesito 20 oraciones en ingles con el uso del verbo "to be" pero 5 indican profesiones, 5 indican sentimientos, 5 indican la edad y otras 5 indican costo o precio?

Profesiones

I am a doctor

He was a dentist

She is a nurse

My sister is a firefighter

They are students

Sentimientos

I am sad

She is in love

My mother is angry

He is happy

She is tired

Edad

I am 20 years old

He is 16 years old

My sister is 10 years old

My dog is old

She is young

Precio

The pencil is cheap

The books are expensive

Chocolate is the cheapest food

The VIP ticket was expensive

That is a cheap hat.