Поставить все виды вопросов (общий, специальный, вопрос к подлежащему, разделительный, альтернативный) к предложениям They watched TV at seven o’clock yesterday.
Ответ:
did they watch TV at 7 o'clock yesterday?
what time did they watch TV yesterday?
who watched TV at 7 o'clock yesterday?
they watched TV at 7 o'clock yesterday, didn't they?
they watched TV at 7 o'clock or 8 o'clock yesterday?