9. Mary keeps leaving her dirty sockets on the floor.
Mary is .............................................
10. I was watching TV at 8 o’clock yesterday. Suddenly, the doorbell rang.
The doorbell .................................................
9. Mary keeps leaving her dirty sockets on the floor. Mary is leaving her dirty sockets on the floor. 10. I was watching TV at 8 o’clock yesterday. Suddenly, the doorbell rang. The doorbell rang when I was watching TV at 8 o’clock yesterday.