3. Choose the correct answer. 1) The children were cold. They .... in the snow all afternoon. A had played B had been playing C were playing D played. 2) This time last week I .... an exam. A sat B had sat C had been sitting D was sitting. 3) Lucy was gardening .... Adam was painting the kitchen. A when B as soon as C after D while. 4) Paul .... an expensive mountain bike last year. A was buying B had bought C bought D had been buying.

Перевод задания: Выберите правильный ответ.

1. The children were cold. They had been playing in the snow all afternoon. (Дети замёрзли. Они играли в снегу весь день.)
   Had been playing обозначает действие, которое длилось до другого момента в прошлом.
2. This time last week I was sitting an exam. (В это время на прошлой неделе я сдавал экзамен.)
   Для действия, происходившего в конкретный момент в прошлом, используется Past Continuous.
3. Lucy was gardening while Adam was painting the kitchen. (Люси работала в саду, пока Адам красил кухню.)
   While соединяет два действия, происходивших одновременно.
4. Paul bought an expensive mountain bike last year. (В прошлом году Пол купил дорогой горный велосипед.)
   С указанием завершённого периода last year употребляется Past Simple.

Ответ: 1 — B; 2 — D; 3 — D; 4 — C.