...history is his subject,espesially...history of...Middle Ages.

History is his subject, especially history of the Middle Ages.

 История его предмет, особенно история средних веков.

Is history his subject, especially history of the Middle Ages?

What is his subject?

What history is his subject?

Is history or is Literature his subject?

Is history his or your subject, especially history of the Middle Ages?

Is history his subject or interest, especially history of the Middle Ages?

History is his subject, especially history of the Middle Ages, is not it?