Past Tenses
1. I (cook) pizza while you were reading.
(was cooking, cooked, had cooked, had been cooking)
2. I (cook) pizza yesterday.
(was cooking, cooked, had cooked, had been cooking)
3. I (cook) pizza before he came home.
(was cooking, cooked, had cooked, had been cooking)
4. I (cook) pizza since 2 o’clock yesterday.
(was cooking, cooked, had cooked, had been cooking)
5. Я написала письмо вчера.
(wrote, had been writing, had written, was writing)
6. Я написала письмо вчера до того, как мама пришла домой.
(wrote, had been writing, had written, was writing)
7. Я писала письмо уже час, когда он пришел домой.
(wrote, had been writing, had written, was writing)
8. Я писала письмо вчера, когда мама готовила пиццу.
(wrote, had been writing, had written, was writing)