10. The phone (ring) __________, but nobody answered.

10. The phone (ring) __________, but nobody answered.

В задании необходимо употребить глагол to ring в нужной форме.

But nobody answered (но никто не ответил) => используем Past Continuous.

The phone was ringing, but nobody answered.

Ответ: The phone was ringing, but nobody answered.