1 When they gor (get) to the station the train had already left (already leave). 2 She (be) very cold because she (not take) her coat. 3 The printer (not work) because he (not turn it on). (not can) take a photo of the crocodile because I (forger) to charge the battery. 5 They (never fly) before and they (be) very nervous. 6 When he (arrive) at the pool he realized he (not bring) his swimsuit. 7 She (just have) dinner, so she (not be) hungry. 8 She (have to) pay again because she (lose) her ticket 9 The waitress (run) after him because he (not pay) the bill. 10 The fire engine (arrive) after the fire (go out) 11 They (can) speak French because they (learn) it at school. 12 She (be) tired because she (be) in the queue all night.

1. When they got to the station, the train had already left.
In this sentence, we have two actions that happened in the past. "They got to the station" is the first action, which happened before "the train had already left". The use of "had already left" indicates that the train left before the action of "getting to the station" occurred.

2. She was very cold because she didn't take her coat.
In this sentence, we have a cause and effect relationship. The cause is "she didn't take her coat", and the effect is "she was very cold". The use of the past tense "was" and "didn't take" indicates that these actions happened in the past.

3. The printer didn't work because he didn't turn it on.
In this sentence, we have a cause and effect relationship. The cause is "he didn't turn it on", and the effect is "the printer didn't work". The use of the past tense "didn't work" and "didn't turn" indicates that these actions happened in the past.

4. I couldn't take a photo of the crocodile because I forgot to charge the battery.
In this sentence, we have a cause and effect relationship. The cause is "I forgot to charge the battery", and the effect is "I couldn't take a photo of the crocodile". The use of the past tense "couldn't" and "forgot" indicates that these actions happened in the past.

5. They had never flown before and they were very nervous.
In this sentence, we have two past actions. "They had never flown before" indicates that the action of flying happened before the feeling of being nervous. The use of "had never flown" and "were" indicates past actions.

6. When he arrived at the pool, he realized he didn't bring his swimsuit.
In this sentence, we have two past actions. "He arrived at the pool" is the first action, and "he realized he didn't bring his swimsuit" is the second action. The use of "arrived" and "realized" indicates past actions.

7. She had just had dinner, so she wasn't hungry.
In this sentence, we have a cause and effect relationship. The cause is "she had just had dinner", and the effect is "she wasn't hungry". The use of "had just had" and "wasn't" indicates past actions.

8. She had to pay again because she had lost her ticket.
In this sentence, we have a cause and effect relationship. The cause is "she had lost her ticket", and the effect is "she had to pay again". The use of "had to" and "had lost" indicates past actions.

9. The waitress ran after him because he hadn't paid the bill.
In this sentence, we have a cause and effect relationship. The cause is "he hadn't paid the bill", and the effect is "the waitress ran after him". The use of "ran" and "hadn't paid" indicates past actions.

10. The fire engine arrived after the fire had gone out.
In this sentence, we have two past actions. "The fire engine arrived" is the first action, and "the fire had gone out" is the second action. The use of "arrived" and "had gone out" indicates past actions.

11. They could speak French because they had learned it at school.
In this sentence, we have two past actions. "They could speak French" is the first action, and "they had learned it at school" is the second action. The use of "could" and "had learned" indicates past actions.

12. She was tired because she had been in the queue all night.
In this sentence, we have a cause and effect relationship. The cause is "she had been in the queue all night", and the effect is "she was tired". The use of "was" and "had been" indicates past actions.

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