Question

The boy _____ with a knife when he _____ his finger. (PLAY, CUT)

Answer 1

Ответ:

The boy was playing with a knife when he cut his finger. (PLAY, CUT)

Объяснение:

Первое действие длительное (играл с ножиком), это Past Continuous.

Второе действие "прервало" первое (порезал палец) - Past Simple.