3 GRAMMAR Choose the correct verb form. 1 Robert, Asif and Katrina _ (already started/had already started) their video chat when Latisha _ (had joined/joined) them. 2 After Robert _ (explained/had explained) his youth group's project, he _ (asked/had asked) his UK friends to write some articles. 3 Robbie Williams _ (played/had played) with the group "Take That" for five years when he _ (had decided/decided) to sing alone. When Robbie released his first single, he _ (already wrote/had already written) lots of songs. 5 Johnny _ (worked/had worked) with a rock band before he _ (had become/became) an actor. 6 We _ (had agreed/agreed) on our top three films after we (compare/had compared) our lists.

Правильные формы глаголов:

1. Robert, Asif and Katrina had already started their video chat when Latisha joined them.
   Объяснение: сначала они начали видеочат, потом Латиша присоединилась. Поэтому первое действие — Past Perfect, второе — Past Simple.

2. After Robert had explained his youth group's project, he asked his UK friends to write some articles.
   Объяснение: сначала Роберт объяснил проект, затем попросил друзей написать статьи.

3. Robbie Williams had played with the group "Take That" for five years when he decided to sing alone. When Robbie released his first single, he had already written lots of songs.
   Объяснение: период игры в группе и написанные песни произошли до других действий в прошлом, поэтому используется Past Perfect.

4. (В задании пропущен номер 4.)

5. Johnny had worked with a rock band before he became an actor.
   Объяснение: работа в группе произошла раньше, чем он стал актёром.

6. We had agreed on our top three films after we had compared our lists.
   Объяснение: оба действия произошли в прошлом, но сравнение списков произошло раньше, поэтому используется Past Perfect.

Ответы кратко:

1. had already started / joined

2. had explained / asked

3. had played / decided / had already written

4. had worked / became

5. had agreed / had compared