16. If he has a temperature, he will see the doctor.
→ Should............................................................
17. If my friends come, I will be very happy.
→ Should............................................................
18. If she had earned a lot of money, she would have flown to New York.
→ Had ............................................................
19. If I knew your father, I would tell him to help you practice harder.
→ Were............................................................
20. If she needs some more money, she can take an extra 200.
→ Should............................................................
16. If he has a temperature, he will see the doctor.
→ Should..........he have a temperature, he will see the doctor...................................................
17. If my friends come, I will be very happy.
→ Should.........my friend come, I will be very happy....................................................
18. If she had earned a lot of money, she would have flown to New York.
→ Had .....she earned a lot of money, she would have flown to New York.......................................................
19. If I knew your father, I would tell him to help you practice harder.
→ Were............I to know your father, I would tell him to help you practice harder.................................................
20. If she needs some more money, she can take an extra 200.
→ Should.......she need some more money, she can take an extra 200.....................................................