17. When she (to open) the door, a man (to stand) on the doorstep. It (to be) her uncle, but she (not to recognize) him because he (to wear) dark glasses.

When she opened the door, a man was standing on the doorstep. It was her uncle, but she didn't recognize him because he was wearing dark glasses. * **opened:** Past Simple, она открыла дверь (факт). * **was standing:** Past Continuous, мужчина стоял (процесс). * **was:** Past Simple, это был ее дядя (факт). * **didn't recognize:** Past Simple, она не узнала (факт). * **was wearing:** Past Continuous, он носил очки (описание).