Choose the correct alternatives to complete the sentences.
1. We _______ go to the cinema. We can do something different.
2. You _______ go out. It's cold and it's raining.
3. They _______ forget their passports. They need them for the school trip.
4. We _______ do homework this weekend. We've got an exam on Monday.
5. You _______ tell them. It's a secret!