Предложение : my elder sister is travelling about France at the moment.
И : they were sleeping at this time yesterday
Сделать отрецательными и задать общий вопрос, альтернативный, к подлежащему,

Отрицания
My elder sister isnt travelling about France at the moment.
The werent sleeping at this time yesterday.

Общ вопрос
Is your elder sister travelling about France at the moment?
Were they sleeping at this time yesterday?

Альт вопрос 
Is your elder sister travelling about France or Russia at the moment?
Were they sleeping at this time yesterday or two days ago?

Вопрос к подл
Who is travelling about France at the moment?
Who was sleeping at this time yesterday?

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