4 Choose the correct option.
1 We ate/were eating lunch when
we were hearing /heard the
avalanche.
2 The rain was starting / started
while we were swimming / swam
in the sea.
3 Emma was walking on the beach
while / when she found the money.
4 I was taking/ took a lot of photos
while I was travelling/ travel in
Iceland.
5 He was cooking food on the fire when/ while he saw the bear
6 James was falling/ fell on the ice while he was skating/ skated with friends.​