When it happened

English

What is the subject of this sentence? The girl and her father held hands.

I loved the food there. It was delicious.

I loved the food there. It were delicious.

Larry went to the supermarket and bought a pizza.

Larry went to the supermarket and he bought a pizza.

Larry went to the supermarket. And he bought a pizza.

Larry went to the supermarket. Bought pizza.

There were a terrible accident yesterday.

He bought her flowers she sent the flowers back.

He made her a birthday present. He bought her chocolate.

Which of these sentences is an incomplete sentence?

He went to the cinema. and he went to the gym.

He went to the cinema. And he went to the gym.

He went to the cinema. And He went to the gym.

He went to the cinema. He went to the gym.