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?