Which period of history are you studying？（英译中)

We have created a faculty of scholars frequently so narrow in their studies and specialized in their scholarship they are simply incapable of teaching introductory courses.（英译中)

Perhaps this book will prove to be of some use to you in your studies.（英译中)

We have three periods of chemistry a week.（英译中)

You are looking rather pale, are you ill？（英译中)

You never mentioned that you are married.（英译中)

The people are the makers of history.（英译中)