Ответы
Ответ:
с.
1. crashed; was standing (короткое действие прервало длительное)
2. left; were playing; got; were still playing; hadn't been moving (по аналогии с 1, а hadn't been moving - past perfect continuous т.к "for four hours")
3. had been jogging; met (уже тогда бежал 2 часа, когда они встретились)
d.
1. I had been wandering around for an hour before I found a cosy cafe to sit in (блуждал около часа, перед тем как нашел уютное кафе. Past perfect continuous - продолжительное действие в прошлом, которое случилось перед другим)
2. Fay didn't start tidying up until the children had left for school (не начала уборку, пока дети не ушли в школу: сначала дети ушли в школу, потом она начала убираться)
3. Michelle had been working for the company for three years when she got a promotion
4. The thieves had run away by the time the police arrived (by the time - past perfect)
5. Sam didn't study for the test because nobody had informed him about it and he had been absent (сначала никто не предупредил и он отсутствовал, а потом он не готовился из-за этого)
Объяснение: