Question

When |__ them, they tennis○was seeing, were playing○saw, played○saw, were playing○was seeing, played​

Answer 1

Ответ:

When I saw them, they were playing tennis.

Объяснение:

Answer 2

It seems like you have a sentence with some missing or incorrect words. Let me help you correct and complete the sentence:

"When I saw them, they were playing tennis."

This sentence is grammatically correct and conveys the idea that the speaker observed someone playing tennis at a specific point in the past.