Суть задания в том, чтобы определить по смыслу где главное и где придаточное и подставить формы им соотв.
поставить глаголы в верной форме

1. If I (see) John, I'll tell him your news. 2. He (be) very pleased if it (be) really true. 3. If you (go) to town on Monday, you (meet) my brother Tom. 4. If you (need) help, my father (help) you. 5. We (have) a picnic lunch if the day (be) fine. 6. If you (ask) a policeman, he (tell) you the way. 7. I (finish) the job tomorrow if I (can). 8. I (not/require) an umbrella if (not/rain). 9. If she (think) it over carefully, she (form) a clear opinion. 10. If they (catch) the bus now, they (arrive) at half past nine. 

If i will be see John , I'll tell him your news.he would be very pleased if it was really true.If you will go to town on Monday , you will meet my brother Tom .If you will need help , my father will help you . we will have a picnic if  the day will be fine. If you will ask a policeman , he will tell you the way . I will  finish the job tomorrow if i can. I didn't require an umbrella if didn't rainy . If she will  think over carefully . she will form a clear opinion. If they will catching bus now , they will arrive at past nine

1. If I see John, I'll tell him your news. 2. He will be very pleased if it is really true. 3. If you go to town on Monday, you meet my brother Tom. 4. If you need help, my father helps you. 5. We will have a picnic lunch if the day is fine. 6. If you ask a policeman, he tells you the way. 7. I'll finish the job tomorrow if I can. 8. I not require an umbrella if is not rain. 9. If she thinks it over carefully, she forms a clear opinion. 10. If they catch the bus now, they'll arrive at half past nine.