. Put the verbs in brackets into the Present Perfect Continuous or Present Perfect Dear Connie, I hope you are enjoying yourself at the university. I’m sure you 1)... have been studying... (study) hard. Everything is fine here at home. Billy 2)... (just/receive) his school report. It was bad, as usual. He 3)... (decide) to leave school next year and find a job. Tracy 4)... (go) to the gym every day for the past two weeks. She 5)... (try) to get in shape for the summer. She 6)... (already/plan) her holiday. Your father 7)... (sell) the old car and he 8)... (buy) a new one.

Вот как я бы заполнил письмо и почему так:

Dear Connie, I hope you are enjoying yourself at the university. I’m sure you 1) have been studying hard. Everything is fine here at home. Billy 2) has just received his school report. It was bad, as usual. He 3) has decided to leave school next year and find a job. Tracy 4) has been going to the gym every day for the past two weeks. She 5) has been trying to get in shape for the summer. She 6) has already planned her holiday. Your father 7) has sold the old car and he 8) has bought a new one.

Короткие пояснения:

1. have been studying — длительный процесс до настоящего.

2. has just received — «just» → результат к настоящему (Present Perfect).

3. has decided — свершившееся решение с результатом сейчас.

4. has been going — повторяющееся действие «каждый день» в течение периода до сих пор.

5. has been trying — длительная попытка, процесс.

6. has already planned — «already» подчёркивает завершённый результат.

7. has sold — завершённое действие с актуальным результатом (машины больше нет).

8. has bought — завершённый результат (есть новая машина).