While I _______ my homework, my brother _______ television

6. While I _______ my homework, my brother _______ television.
A. was doing - was watching B. was doing - watched
C. did - was watching D. did - watched

7. The teacher _______ the lesson when a student _______ a question.
A. was explaining - was asking B. was explaining - asked
C. were explaining - were asking D. is explaining - asks

8. The children _______ in the park when the ice cream truck _______.
A. were playing - comes B. are playing - come
C. played - was coming D. were playing - came

9. What _______ you _______ when the power went out?
A. are - doing B. were - doing
C. did - do D. do - do

10. We felt tired because we _______ in the garden all afternoon.
A. were working B. worked
C. had worked D. work