Past perfect.составить вопросы1 (общий вопрос)2(специальный)3(

Question

Past perfect.составить вопросы
1 (общий вопрос)
2(специальный)
3(

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Answer 1

Had Nina worked at the plant by Saturday?
Who had worked at the plant by Saturday?
Where had Nina worked by Saturday?
When had Nina worked at the plant?
What did Nina do at the plant by Saturday?