Here’s a breakdown of the sentences for each question:

### Question 1: Past Continuous in Storytelling
- **Sentence A:** "While Jack’s dad was trying to fix the car, Jack and his mom felt worried because it was getting dark."
- **Sentence B:** "When Jack’s dad fixed the car, Jack and his mom felt worried because it was dark."
- **Correct Answer:** A (It uses past continuous "was trying").

### Question 2: Using "here" and "there"
- **Sentence A:** "One day, Jenny and her family travelled to the countryside. When they got to the countryside, it was raining, and they couldn’t go anywhere."
- **Sentence B:** "One day, Jenny and her family travelled to the countryside. When they got there, it was raining, and they couldn’t go anywhere."
- **Correct Answer:** B (It uses "there").

### Question 3: Using Subordinate Clauses After "say" and "tell"
- **Sentence A:** "She said, 'Dinosaurs are my favourite!'"
- **Sentence B:** "She told her sister that dinosaurs were her favourite."
- **Correct Answer:** B (It uses a subordinate clause).

If you have any specific questions or need further clarifications, feel free to ask!