Нужна помощь!Задайте все типы вопросов к предложениям: 1.The students were writing a test at 12 o'clock yesterday. 2.The students had written a test by 12 o'clock yesterday.

1.Were the students writing a test at 12 o'clock yesterday? Were the students writing a test at 12 or 10 o'clock yesterday? The students were writing a test at 12 o'clock yesterday, weren't they? Who was writing a test at 12 o'clock yesterday? What were the students writing  at 12 o'clock yesterday? 2. Had the students written a test by 12 o'clock yesterday? Had the students written a test by 12 or 10 o'clock yesterday? The students had written a test by 12 o'clock yesterday, hadn't they? Who had written a test by 12 o'clock yesterday? What had the students written  by 12 o'clock yesterday?