Give the correct form of the verbs in brackets: Simple Past or Past Progressive.
10. Mr. Green _________(drive) very fast when the accident happened.
11. She (play) ________the piano when our guests (arrive) ________last night.
12. Yesterday, while I (wait) ________for the bus, the rain (stop)________.
13. Last night, I (read) _________in my sitting room when the bell (ring) ________.
14. George ________(fall) off the ladder while he________(paint) the ceiling.
15. Last night I ________ (read) in bed when suddenly I________ (hear) a
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