Past simple or past continuous (1)

1. I hurt my hand while I __________ basketball.
   1.   ?    was playing
   2.   ?    played
2. Last month I decided to buy a new car, and today I finally __________ it.
   1.   ?    bought
   2.   ?    was buying
3. My grandmother __________ about all of her grandchildren.
   1.   ?    cared
   2.   ?    was caring
4. I ____________ in the pool when I saw her coming towards me.
   1.   ?    was swimming
   2.   ?    swam
5. John was arguing with his girlfriend, so I __________ the door.
   1.   ?    closed
   2.   ?    was closing
6. This time last year we __________ to California.
   1.   ?    were driving
   2.   ?    drove
7. We __________ breakfast when one of our hostess came to have a conversation with us.
   1.   ?    were having
   2.   ?    had
8. I __________ a book when I heard a noise outside.
   1.   ?    was reading
   2.   ?    read
9. He __________ everything that I told him.
   1.   ?    understood
   2.   ?    was understanding
10. I __________ a shower when the phone rang.
    1.   ?    was taking
    2.   ?    took