The English in the lecture hall can be made into the following sentences:

1. That? Lecture hall? It is the best example of mass education.

The lecture hall is the main example of large-scale education.

2. in a? Lecture hall? There is a professor sitting in a university in England.

There is a professor sitting in the lecture hall of an English university.

3. The center is also equipped with interesting and imperial facilities, and? Lecture hall.

The center includes interesting interactive facilities and a lecture hall.