grammar - Doubts with second and third conditional

I've got some doubts while doing my exercise in second and third conditional. Could somebody check if it is correct?

Thanks in advance.

1. 
   
   

   Matt doesn't treat Sue well. She won't stay with him.
   If Matt didn't treat his girlfriend better, she wouldn't stay with him.

   
   


2. 
   

   You don't do any exercise. You don't feel healthy.
   You would feel a lot healthier if you did some exercise.

   
   


3. 
   

   The taxi driver had satnav. He found the street easily.
   The driver would have found the street if he had had satnav.

   
   
   


4. 
   

   Jim bought the wrong size. I had to change the sweater.
   If Jim had bought the right size, I wouldn't have changed the sweater.

   
   


5. 
   

   You get up late. You waste half the morning.
   If you got up earlier, you wouldn't waste half the morning.

   
   

Answer

Second Conditional. Talk about an action or situation in the present or future which is IMPROBABLE.

If the taxi driver had Satnav, he would find the street easily (=The taxi driver didn't have Satnav that's why it's IMPOSSIBLE he can find the street easily)

If you got up earlier, you wouldn't waste half the morning.(=You didn't get up earlier, that's why it's IMPOSSIBLE you can back in time.)

First Conditional; PROBABLE

If Matt doesn't treat Sue well, she won't stay with him. (=This is First conditional, because it's a pretty POSSIBLE future action.)

If you don't do any excercise, you won't be healthy.(=This is First conditional, because it's a pretty POSSIBLE future action)

Third Conditional. NEVER HAPPEND

If Jim had bought the right size, I wouldn't have changed the sweater.(=Third conditional because it Never happend.)

Check your exercises' verbs, they'll give you the time for the action. For conditionals you have to think carefully about the Possibilities and impossibilities. Good Luck!