1. If you give me this book, I will return it tomorrow.
2. I'll play tennis with you if the weather is fine.
3. Dad will watch this film with us if he comes home at six o"clock.
4. If Dennis does his homework now, we will play computer games in the evening.
5. We will fly to Moscow if we are good at school.

1)If you give me this book, I will return it tomorrow
2)I'll play tennis with you if the weather is fine
3)Dad will watch this film with us if he comes home at six o"clock
4)If Dennis does his homework now, we will play computer games in the evening
5)We will fly to Moscow if we are good at school