Ответ:

1. We'll do the quiz,if there are some good prizes

2. If the next question is about History, I don't know

the answer.

3. If he gets the next answer right, he will win a prize

4. Will he lose if he gives the wrong answer?

5. If they win, they will have a party.

6. My friends will be surprised if they see me on TV

Объяснение:

If-Clause Main Clause

If+Present Simple Will/Can/Must и т.д+

инфинитив глагола