Conditional Sentences ( If Clause)

1. I didn’t feel good yesterday. If I (feel) letter, I (come) to class yesterday.
2. I don’t feel good today. If I (feel) better I (take) a walk in the park today.
3. I have a cold today, but I will probably feel better tomorrow. If I (feel) better tomorrow. I go to class.
4. I’m sorry that you didn’t come to the party. If you (come) you (have) a good time.
5. I’m tired. If I (be not) tired. I (help) you.

 
Anwers :
1. I didn't feel good yesterday. If  I had felt better, I would have come to class yesterday.
2. I don't feel good today. If I feel better, I will take a walk in the park today.
3. I have a cold today, but I will probably feel better tomorow. If I feel better tommorow. I will go to class
4. I'm sorry that you didn't come to the party, If you had come you would had have a good time.
5. I'm tired. If I am not tired. I will help you.