Here are suggested completions for the blanks in the text:

1. **What will you do if you got fat?**
2. **If people are kind to me, I (be) good to you.**
3. **If you rang the bell, the servant would come.**
4. **If I had known that the baby was hungry, I (feed) him.**
5. **If it rains Sunday, we wouldn't have to work.**
6. **If he had your address, she (write) to you.**
7. **If you let me, I (give) for us to win.**
8. **If he was the match, if you (play) for us, they (do) their work well.**
9. **If I see him, I (give) him a lift.**
10. **If the table will collapse if you (stand) on it.**
11. **If you lose all that, he will be ill.**
12. **If I find your passport, I (telephone) you at once.**
13. **If the police (catch) him if they catch him.**
14. **If he (read) in bad light, he will ruin his eyes.**
15. **If he (steal) your car if you leave it unlocked.**
16. **What will happen if my parachute (not open)?**
17. **If he (borrow) my car, I'll give him £10.**
18. **If you (need) a radio, she can borrow mine.**
19. **If you (not go) away, I’ll send for the police.**
20. **If he gets very angry if he (make) any more mistakes.**
21. **If she (hear), late will go without him.**
22. **If you put on the kettle, I (make) the tea.**
23. **If I give my dog a bone, he (bury) it at once.**
24. **He’ll be late for the train if he (not start) at once.**
25. **If you come late, they (not let) you in.**

Feel free to ask if you need anything else!