Question

2 verbs. 1 Harry was swimming / swum when he saw / was seeing the shark. 2 We were leaving / left while my granddad was sleeping / slept. 3 I talked / was talking to a friend when you were phoning / phoned me. 4 They were eating / ate their sandwiches while they walked / were walking to school. 5 My aunt was driving / drove home when she had / was having an accident.​

Answer 1

1. Harry was swimming when he saw the shark
2. We left while my granddad was sleeping
3. I was talking to a friend when you phoned me
4. They ate their sandwiches while they were walking to school
5. My aunt was driving home when she had an accident

Answer 2

Here are the correct forms of the verbs for each sentence:

1. Harry was swimming when he saw the shark.
2. We were leaving while my granddad was sleeping.
3. I was talking to a friend when you phoned me.
4. They were eating their sandwiches while they walked to school.
5. My aunt was driving home when she had an accident.

In each sentence, I've provided the verb forms that make the most sense in the context of the sentence.