Question

1.You will enjoy yourself if you (поедете в Италию)
2.Ask him if he (поедет в Италию)
3.I don't  know when he ( приедет из Лондона)
4.I'll phone to him when he (приедет из Лондона)
5.I'll talk to him if I (увижу его сегодня)
6.I'm  not sure if I (увижу его сегодня)
7.If air pollution gets worce (никто не сможет отдохнуть)
8.If Daniel trains hard (он одержит победу)
9.I shall not get up at 5 in the mornong if I (не сделаю уборку)
10.When you come to London(вы увидите много достопримечательностей) 

Answer 1

1. You will enjoy yourself if you go to Italy.
2. Ask him if he goes to Italy.
3. I don't know when he comes back from London.
4. I'll phone to him when he will come back from London.
5. I'll talk to him if I see him today
6. I'm  not sure if I will see him today.
7. If air pollution gets worse, no one can have a rest.
8. If Daniel trains hard, he'll win.
9. I shall not get up at 5 in the mornong if I don't do the cleaning.
10. When you come to London, you will see many sights.

Answer 2

1. You will enjoy yourself if you go to Italy.
2. Ask him if he goes to Italy. 
3. I don't know when he comes back from London.
4. I'll phone to him when he comes back from London.
5. I'll talk to him if I see him today.
6. I'm not sure if I see him today.
7. If air pollution gets worse, no one can have a rest.
8. If Daniel trains hard, he will win.
9. I shall not get up at 5 in the mornong if I don't do the cleaning.
10. When you come to London, you'll see many sights.