Ответ:

1. Let's do our homework!

2. For a star we could watch a triller.

3. Why don't we watch a chat show.

4. We might help your sister and then watch a documentary film .

5. We could go to the cinema.

6. Do you think we should help our grandparents?

7. Do you think we might give them a present?

8. It might be an idea to cook cupcakes.