4. Choose the corresponding pair of verbs and fill in the blanks: He ___ the book shop, when someone ___ out of the shop. a) was passing; ran b) passed; was running c) was passing; was running d) passed; ran

Длительное действие, происходившее в момент другого события, ставится в Past Continuous: was passing. Краткое завершённое событие — в Past Simple: ran.

He was passing the book shop, when someone ran out of the shop.

Ответ: a) was passing; ran.