1. Choose the correct verb form (не нужно переписывать, только ответы и объясните мне, почему нужно выбрать так.)

First, she was buying / bought tickets and then she was phoning / phoned John.

While he was reading / read a fil review, his friends were discussing / discussed a film.

On the way home the boys descussed / were discussing the film they had seen.

When did you buy / were you buying this DVD?

The day was wonderful. The birds sang / were singing and the mood was great.

What did you do / were you doing at 9 yesterday?

When he came / was coming to the cinema the film was over.

Brian and Jill were finding / found their seats just as the light went / was going down for the start of the film

They released / were releasing that film in 1999 

•bought, phoned - однократные действия•was reading (маркер while), were discussing (тот же маркер while)•were discussing (On the way home как маркер)•did you buy (однократное действие, в Pr.Cont этот глагол не используется)•were singing (описание атмосферы дня)•were you doing (событие происходившее в данное время)•came (однократное действие) (перевод на русский: Когда он ПРИШЕЛ в кинотеатр, фильмы уже закончился)•found (нашли места в определенный момент времени; в Pr.Cont. этот глагол не используется; маркер just as=while), was going down (из-за маркера just as=while)•released (маркер in 1996; этот глагол в Pr.Cont не употребляется)

1. Choose the correct verb form (не нужно переписывать, только ответы и объясните мне, почему нужно выбрать так.)First, she was buying / bought tickets and then she was phoning / phoned John. - перечисление однократных действий в прошлом - Past SimpleWhile he was reading / read a fil review, his friends were discussing / discussed a film. - одновременность двух действий в Past Continuous - ключевое слово while - в то время, какOn the way home the boys descussed / were discussing the film they had seen. - Past Continuous потому что  ключевые слова - по дороге домой....(длительность действия)When did you buy / were you buying this DVD? - с вопросительным словом when - когда -всегда Past SimpleThe day was wonderful. The birds sang / were singing and the mood was great. - Past Continuous, потому что второе предложение раскрывает смысл первого: почему именно день был прекрасен?What did you do / were you doing at 9 yesterday? - Past Continuous, потому что указано конкретное время в прошломWhen he came / was coming to the cinema the film was over. - обычное действие в Past Simple - действие в главном предложении закончилось раньше, чем в придаточномBrian and Jill were finding / found their seats just as the light went / was going down for the start of the film - в первой части предложения действие длилось (они искали места). во второй части однократность действия - свет погасThey released / were releasing that film in 1999 - Past Simple, потому что указан год в прошлом