6 Complete the sentences with the correct form of the verbs in brackets. Then rewrite the sentences changing when and while.
He was walking (walk) in the forest when the dog appeared (appear). While he was walking in the forest, the dog appeared.
1 While the children ... (play), they ... (see) a snake.
2 While they ... (sail) along the coast, there ... (be) a storm.
3 The plane ... (fly) over the area when the pilot (see) the explorers. 4 When I ... (arrive), the rescuers ... (look) for the . lost girl.
5 I... (have) an accident while I... (drive) home.
6 I... (meet) Hannah when I... (walk) in the park.
