ex 1
1 was sailing, hit - Sinking of the Titanic
2 were dancing, heard - chernobyl disaster
3 was watching, stepped - Apollo 11
4 were waving, heard - John F Kennedy
5 was working, asked - first woman to fly
ex 2
1 had had, arrived
2 had done, ate
3 had finished, called
4 had done, spoke
5 had finished, watched
