Respuesta:
1. Match the halves to make sentences. Then identify the actions which happened first:
a. because they had won the final. - Action happened first: They had a party.
b. but this one was really serious - Action happened first: We had had lots of arguments,
c. because she had forgotten her towel - Action happened first: Camila didn't go swimming.
d. so they ordered a big piern - Action happened first: They had a party.
e. because I hadn't been very nice - Action happened first: I sent a message to apologize.
2. Write the sentences in the past perfect in the affirmative () or negative (x).
1. In 1979, Jim Lewis had been searching for his biological family for 39 years when they found each other when they were four years old.
2. They hadn't known each other for long, but they discovered they had many things in common.
3. The couples who had adopted each of them had named them James.
4. Both of them had married for a second time before they drove to the same spot in Florida every year.
5. They had called Betty "amaryl" for the past 39 years.
6. They also had been spending their weekends together for 39 years.
7. They hadn't realized they were so similar until they started talking.
3. Grammar challenge:
1. 2019 - Taking a photo of a black hole.
2. 4500 BC - Inventing the wheel.
3. 1400 - Starting to print books. (Correction: 1400 - Started to print books.)
4. 2015 - Discovering water on Mars.
5. 1910 - Finding evidence of the existence of dark matter. (Correction: 1910 - Found evidence of the existence of dark matter.)
Hope this helps! Let me know if you need further assistance!
