Verified answer

Pupils usually have seven classes a day.

▪︎Общий вопрос:

Do pupils usually have seven classes a day?

▪︎Специальный вопрос:

How many classes do pupils usually have a day?

▪︎Вопрос к подлежащему:

Who usually has seven classes a day?

▪︎Разделительный вопрос:

Pupils usually have seven classes a day, don't they?

▪︎Альтернативный вопрос:

Do pupils usually have seven or eight classes a day?