My family is/a in Africa

My family is in Africa. - Моя семья в Африке.

We don't use indefinite article with names of continents. We can't say is a Africa. We must say in Africa.

My family is not in Africa. (Negative).

Is my family in Africa? (General question).

Who is in Africa? (Special question).

Where is my family? (Special question).

Is my family or are your friends in Africa? (Alternative question).

Is my family in Africa or in America? (Alternative question).

My family is in Africa, is not it? (Disjunctive question).