What does cio stand for ?

193. Choose the right answer. I’m so worried about Max. _______ you hear any news, please phone me.

1. 
   #as soon as
   
2. 
   before
   
3. 
   after
   
4. 
   while
   

194.Choose the right answer. ______ you’ve read the newspaper, can I have it?

1. 
   #After
   
2. 
   Until
   
3. 
   When
   
4. 
   While
   

195. Choose the right answer. _______ you are having your hair cut, I am going to pick up Grandad and take him home.

1. 
   #While
   
2. 
   Until
   
3. 
   When
   
4. 
   After
   

196. Choose the right answer. Stop at a petrol station _______ we run out of petrol.

1. 
   #before
   
2. 
   while
   
3. 
   as soon as
   
4. 
   after