PDF chapter test TRY NOW

Complete the following sentence with "can"  or "could":
 
1. You ______ play with Jennifer after you do your workout.
   
 
2. ______ I use your mobile phone?
   
 
3. Do the urgent task first, and then you ______ check the rest.
   
 
4. John ______ not go to work yesterday because he was ill.