Activity 9. Read and find the secret message.

To solve the exercise, we first identify if each sentence is correct or incorrect. Then, we use the corresponding letters to form the secret message. Here's the analysis for each question:

1. Did she climb a mountain? - Correct (Letter: D)
2. Did he moving to London two years ago? - Incorrect (Letter: I)
3. Did she celebrate a big party? - Correct (Letter: D)
4. Did they called their parents? - Incorrect (Letter: F)
5. Did we walk in the forest yesterday? - Correct (Letter: D)
6. You did live in the city last year? - Incorrect (Letter: K)
7. Did Natasha close the window? - Correct (Letter: L)
8. Did he enjoyed the trip last week? - Incorrect (Letter: E)
9. You did studied hard for the exam? - Incorrect (Letter: I)
10. Did he helped his parents? - Incorrect (Letter: E)
11. Did you bother your sister in the morning? - Correct (Letter: T)
12. Did she cooked the lunch at home? - Incorrect (Letter: D)
13. Did Sarah start classes at nine? - Correct (Letter: S)
14. Did they worked in a big company? - Incorrect (Letter: M)
15. Did you like vegetables when you were 5? - Correct (Letter: O)
16. Did he watched a good movie last night? - Incorrect (Letter: V)
17. Did you dance at the party? - Correct (Letter: I)
18. Did they missed the bus to school? - Incorrect (Letter: E)

Using the correct letters in sequence, the secret message is: "DID YOU LIKE MOVIES".