Question

He is sad. (lose his rugby ball)
He has lost his rugby ball.
She was excited. (buy a new camera).
They were happy. (win first prize) 3
4 We are worried. (not hear from Bob yet) ​

Answer 1

Here are the sentences with the missing information added:

1. He is sad because he lost his rugby ball.
2. He has lost his rugby ball.
3. She was excited because she bought a new camera.
4. They were happy because they won first prize.
5. We are worried because we have not heard from Bob yet.